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Best small animal cages under $500

This is the band where the published figures stop being the constraint and the catalogue does. Only one species still cannot be housed here, and it is not the one people expect.

Two young rabbits and a guinea pig eating fresh green leaves together on bedding

Under $500 the most useful enclosure on the market is the MidWest Critter Nation Double Unit (162): two levels of 6 sq ft each, half-inch bars, solid shelves and a stand, and it houses rats, ferrets of any age including kits, and a chinchilla's floor requirement — three species to their own published figures, from one purchase. If the animal is a hamster, the answer is different and it is the BUCATSTATE 3.0 47 in, whose 1,109 sq in clears PDSA's floor figure by 43 percent with a stated 11 in of bedding depth on top. The budget pick is the Critter Nation Single Unit (161) — identical bars and shelving in one storey, for roughly half the double. The Ferret Nation 182 is the pick for adult ferrets that climb, with the bar-spacing caveat below. And the finding this band exists to report: at $500, seven of the eight species we track can be housed to their own published figure. The one that still cannot is the rabbit, and no cage at any price fixes that. Prices are live from each listing with the as-of date under every button.

Rat cage suggested minimum · suggested minimum

a 24in x 24in x 24in wire cage with multiple levels for one or two rats, with bars 1/2in apart

Our conversion: 576 square inches (4 square feet) of footprint, spread over more than one level

Issued by Massachusetts Society for the Prevention of Cruelty to Animals, read 4 October 2026. The same page advises a solid bottom and warns against wire mesh platforms or bottoms, which it says can cause abrasions to feet. The figure is published for one to two rats rather than as a per-animal allowance, and it is a footprint rather than a usable-floor figure.

This completes a ladder. Best small animal cages under $100 found that only two of the eight species on this site can be housed to their own published floor figure in that band. Best small animal cages under $200 found that four more become reachable. This is the rung above, and it is the last one worth building — the most expensive enclosure in our entire registry carries a live price of under $400, so $500 is where the catalogue runs out rather than where our patience does.

Which makes this page's job unusual for a price-band page. It is not "what can you afford". It is "you can afford all of it — so which one, and for what".

Where the eight species stand at $500

Each species' published figure against the three price bands
SpeciesPublished figureWho publishes itUnder $100Under $200Under $500
Guinea pig (one or two)7.5 sq ft min, 10.5 preferredHumane World for AnimalsYesYesYes
Mouse (one to three)12 x 12 x 20 inMSPCAYesYesYes
Hamster100 x 50cm (775 sq in) continuousPDSANoYesYes, by 43 percent
Rat (one to two)24 x 24 x 24 in, multi-levelMSPCANoYesYes, comfortably
Ferret24 x 24 x 18 inVCA Animal HospitalsNoYesYes, several times over
Gerbil (two)100 x 50 x 50cmWoodgreen Pets CharityNoYesYes
Chinchilla (one)3ft x 2ft x 3ftVCA Animal HospitalsNoFloor yes, height shortFloor yes, height still short
Rabbit3m x 2m x 1m including exerciseRSPCA and the RWAFNoShelter onlyShelter only - no cage meets it

Each figure is the published number from the named body as recorded elsewhere on this site with its source. The three band columns are our assessment against those figures using manufacturers' own published dimensions, and are ours rather than an endorsement by any of those bodies.

Two rows need their caveat stated rather than buried. The chinchilla row has not improved since $200 and will not improve at any price, because VCA's figure for a single chinchilla is five feet of height for a pair and three for one, and the tallest cage we assess is short of the pair figure — best chinchilla cages for 2 has that arithmetic in full. The rabbit row is not a budget problem at all. The published figure from the RSPCA and the RWAF is a single enclosed area of 3m x 2m x 1m *including exercise space*, which is about 64.5 sq ft. No hutch or cage ever made is that, so the answer is a shelter plus a run rather than a bigger cage — see best rabbit hutches under $200.

What the extra $300 over the $200 band actually buys

  1. 1.A second storey, not more floor. The jump from the Critter Nation 161 to the 162 doubles the levels and changes nothing about the footprint. For rats and ferrets — animals that use vertical space — that is the single most valuable upgrade in this band.
  2. 2.Margin instead of a pass. At $200 a hamster cage clears PDSA's floor figure. At $500 it clears it by 43 percent, with a stated 11 in of bedding capacity against PDSA's 25cm. Margin is not nothing on a figure you have to live with for three years.
  3. 3.Bar spacing you can take on trust. The half-inch Critter Nation spacing holds a ferret kit that the one-inch Ferret Nation spacing does not. That is the clearest safety-for-money trade on this page.
  4. 4.Solid shelves and a stand, included. Both matter and both are routinely sold separately elsewhere. A stand also lifts the base level out of floor draughts, which cage placement covers.
  5. 5.Nothing at all for a rabbit. Worth repeating, because it is the species most likely to be the reason somebody has a $500 budget in the first place.
Quick picks
#ProductBest forScorePrice
1
MidWest Critter Nation Double Unit (162)
MidWest Critter Nation Double Unit (162)36 x 24 = 864 sq in (6 sq ft) per level, two levels
Ferrets of any age, and kits especially9.5out of 10
$388.99View on Amazon

Price as of November 12, 2026. #ad Disclosure

2
BUCATSTATE Hamster Cage 3.0, 47 in
BUCATSTATE Hamster Cage 3.0, 47 in47 x 23.6 = 1,109 sq in (7.7 sq ft) by our arithmetic
Deep burrowing without a DIY build9.0out of 10
$279.99View on Amazon

Price as of November 12, 2026. #ad Disclosure

3
MidWest Ferret Nation Double Unit (182)
MidWest Ferret Nation Double Unit (182)36 x 25 = 900 sq in (6.25 sq ft) per level, two levels
Adult ferrets that climb8.6out of 10
$311.99View on Amazon

Price as of November 12, 2026. #ad Disclosure

4
Niteangel Vista Hamster Cage, Large
Niteangel Vista Hamster Cage, Large47.1 x 22.7 = 1,069 sq in external footprint
A Syrian that needs real burrowing depth9.1out of 10
$309.95View on Amazon

Price as of November 12, 2026. #ad Disclosure

5
MidWest Critter Nation Single Unit (161)
MidWest Critter Nation Single Unit (161)36 x 24 = 864 sq in (6 sq ft), one level
A single ferret, or a first half of a double8.3out of 10
$194.99$204.995% offView on Amazon

Price as of November 12, 2026. #ad Disclosure

6
Prevue Pet Products Feisty Ferret Home 485
Prevue Pet Products Feisty Ferret Home 48531 x 20 = 620 sq in (4.3 sq ft) per level
A smaller room and a single adult ferret6.4out of 10
$189.99$229.9917% offView on Amazon

Price as of November 12, 2026. #ad Disclosure

Scores are our own assessment of published specifications against the thresholds set out in how we assess products. They are not test results and not customer ratings. Tap a row to read the full assessment.

Dimensions and usable floor

Every cage in the band, with our floor-area arithmetic shown
ProductContinuous floorBar spacingLevels and rampsMaterial
MidWest Critter Nation Double Unit (162)36 x 24 = 864 sq in (6 sq ft) per level, two levelsclears our threshold1/2 in horizontalTwo levels with a locking swing-up ramp and full-width doorsPowder-coated steel with deep removable plastic pans
BUCATSTATE Hamster Cage 3.0, 47 in47 x 23.6 = 1,109 sq in (7.7 sq ft) by our arithmeticclears our thresholdNo bars: clear acrylic panels in an aluminum frameManufacturer states the deep base takes up to 11 in of beddingAluminum frame with thickened clear acrylic panels
MidWest Ferret Nation Double Unit (182)36 x 25 = 900 sq in (6.25 sq ft) per level, two levels1 inTwo levels with locking swing-up ramps and ramp coversPowder-coated steel with deep removable plastic pans
Niteangel Vista Hamster Cage, Large47.1 x 22.7 = 1,069 sq in external footprintclears our thresholdNo bars on the long walls: MDF panels with a mesh topDeep front glass panel takes roughly 10 in of substrateMDF carcass with aspen veneer, glass front, wire mesh lid
MidWest Critter Nation Single Unit (161)36 x 24 = 864 sq in (6 sq ft), one levelclears our threshold1/2 in horizontalOne level, with a shelf; a second unit stacks on top laterPowder-coated steel with a deep removable plastic pan
Prevue Pet Products Feisty Ferret Home 48531 x 20 = 620 sq in (4.3 sq ft) per levelbelow our threshold7/8 inRamps, shelves and a hammock suppliedPowder-coated wire with removable platforms, grille and debris tray

Dimensions as published by each manufacturer or its retailer, read 27 September 2026 and linked in each assessment below. A tick marks a product that clears our own floor-area threshold; a cross marks one that does not. Where a manufacturer does not publish a figure, the cell says so rather than estimating it.

Read the two hamster enclosures against 775 sq in and the four wire cages against their own species' figures rather than against each other. A 620 sq in ferret level and a 1,109 sq in hamster floor are not competing for the same animal, and ranking them on raw area would tell you nothing.

Which to buy, by animal

  • Rats: the Critter Nation 162. Two levels, half-inch bars that stop a young rat posting its head through, solid shelves rather than wire, and it clears the MSPCA's multi-level figure with room over it. Best rat cages and rat cage bar spacing have the detail.
  • Ferret kits, or any ferret you are unsure about: the Critter Nation 162 again, for the half-inch spacing. A kit's skull passes a one-inch gap, and no retrofit fixes a cage whose bars are too wide.
  • Adult ferrets that climb: the Ferret Nation 182. Marginally more floor per level and a one-inch gap that gives far better climbing purchase — and never for kits. Alternatives to the Ferret Nation covers the documentation problem with its published bar spacing before you commit.
  • A Syrian hamster: the BUCATSTATE 3.0 47 in. The largest continuous floor in the registry and the deepest stated bedding capacity, which together are what deep bedding asks for.
  • A Syrian, in a room where the enclosure is furniture: the Niteangel Vista Large. Slightly less floor than the BUCATSTATE, a glass front that lets you see the substrate depth, and MDF that will not forgive a hose. Best glass cages compares the two properly.
  • One ferret, one chinchilla, or a first half of a double: the Critter Nation 161, our budget pick here. Same bars, same shelves, one storey, and the 162's upper unit fits it later.
  • A smaller room: the Prevue 485. A 31 in footprint where the MidWest cages need 36, with 620 sq in per level and 7/8 in bars — both below our lines, and it is last on this page for exactly those two reasons.

Our pick · Ferrets of any age, and kits especially

MidWest Critter Nation Double Unit (162)

The half-inch bar spacing is the whole argument: it is the same cage as the Ferret Nation with a gap a ferret kit cannot get its head through.

Clears our threshold6 sq ft per level and 1/2 in bars
Dimensions
36 x 24 x 63 in including the rolling stand
Continuous floor
36 x 24 = 864 sq in (6 sq ft) per level, two levels
Bar spacing
1/2 in horizontal
Material
Powder-coated steel with deep removable plastic pans
Levels and ramps
Two levels with a locking swing-up ramp and full-width doors

What it gets right

  • 1/2 in bar spacing holds a kit that 1 in spacing does not
  • 6 sq ft of usable floor per level, comfortably over our per-level bar
  • Full-width doors mean you can reach every corner, which matters weekly
  • Deep pans contain litter rather than spreading it

What it gets wrong

  • Horizontal half-inch bars give less climbing purchase than wider spacing
  • Heavy and awkward to assemble alone
  • The stand's casters roll on hard floors more than you want them to

Who should buy something else

Not necessary if your ferrets are adults and you have measured their head width against 1 in. The Ferret Nation costs less and climbs better; the half-inch is insurance you may not need.

Specifications read from MidWest product listing and retailer specifications on 27 September 2026. Floor-area arithmetic is ours and is shown above so you can redo it.

MidWest Critter Nation Double Unit (162)
Our assessment9.5/10
  • Bar spacing safety10
  • Usable floor per level9
  • Cleaning access10
  • Build quality9
  • Escape resistance10
$388.99View on Amazon

Price as of November 12, 2026. #ad Disclosure

Number 2 · Deep burrowing without a DIY build

BUCATSTATE Hamster Cage 3.0, 47 in

The deepest substrate capacity we could verify on a mainstream enclosure: an 11 in bedding claim on a 1,109 sq in floor is the combination almost nothing else offers.

Clears our threshold1,109 sq in vs our 775 sq in floor
Dimensions
47 x 23.6 x 25.5 in; manufacturer states 7.8 sq ft of floor
Continuous floor
47 x 23.6 = 1,109 sq in (7.7 sq ft) by our arithmetic
Bar spacing
No bars: clear acrylic panels in an aluminum frame
Material
Aluminum frame with thickened clear acrylic panels
Bedding depth possible
Manufacturer states the deep base takes up to 11 in of bedding

What it gets right

  • 1,109 sq in clears our 775 sq in floor by 43 percent
  • 11 in of stated bedding capacity exceeds PDSA's 25cm (10 in) figure
  • Acrylic and aluminum wipe clean and do not absorb urine
  • Stackable frame, so a second unit can go above without extra floor space

What it gets wrong

  • Acrylic scratches, and a scratched panel is permanently cloudy
  • No bars means no climbing surface; enrichment has to come from the layout
  • A full 11 in of substrate in this footprint is a lot of bedding to buy and replace

Who should buy something else

Wrong for a hamster that climbs rather than digs. If your animal spends its waking hours on the bars, an enclosure with no bars removes most of what it does.

Specifications read from BUCATSTATE product listing on 27 September 2026. Floor-area arithmetic is ours and is shown above so you can redo it.

BUCATSTATE Hamster Cage 3.0, 47 in
Our assessment9.0/10
  • Floor area vs threshold10
  • Bedding depth10
  • Wheel compatibility8
  • Material durability8
  • Cleaning access9
$279.99View on Amazon

Price as of November 12, 2026. #ad Disclosure

Number 3 · Adult ferrets that climb

MidWest Ferret Nation Double Unit (182)

Slightly more floor per level than the Critter Nation and a one-inch bar gap, which is fine for a grown ferret and the reason kits escape.

Clears part of itFloor passes; 1 in bars fail our half-inch filter for kits
Dimensions
36 x 25 x 62.5 in including the rolling stand
Continuous floor
36 x 25 = 900 sq in (6.25 sq ft) per level, two levels
Bar spacing
1 in
Material
Powder-coated steel with deep removable plastic pans
Levels and ramps
Two levels with locking swing-up ramps and ramp covers

What it gets right

  • 6.25 sq ft per level, marginally more than the Critter Nation
  • 1 in bars give much better climbing purchase
  • Same full-width doors, deep pans and locking ramps
  • Usually cheaper than the equivalent Critter Nation

What it gets wrong

  • 1 in spacing is the single reason ferret kits get out of this cage
  • No way to retrofit narrower spacing; the fix is a different cage or wire panels

Who should buy something else

Never for kits, and not for a small jill who can flatten her head through a one-inch gap. Measure the animal, not the marketing, and buy the Critter Nation if there is any doubt.

Specifications read from MidWest product listing on 27 September 2026. Floor-area arithmetic is ours and is shown above so you can redo it.

MidWest Ferret Nation Double Unit (182)
Our assessment8.6/10
  • Bar spacing safety6
  • Usable floor per level10
  • Cleaning access10
  • Build quality9
  • Climbing10
$311.99View on Amazon

Price as of November 12, 2026. #ad Disclosure

Number 4 · A Syrian that needs real burrowing depth

Niteangel Vista Hamster Cage, Large

The largest mainstream single-piece hamster enclosure we could verify, and the only one whose external footprint clears our 775 sq in floor with room to spare even after you allow for wall thickness.

Clears our threshold1,069 sq in vs our 775 sq in floor
Dimensions
47.1 x 22.7 x 26.9 in external (manufacturer-listed)
Continuous floor
47.1 x 22.7 = 1,069 sq in external footprint
Bar spacing
No bars on the long walls: MDF panels with a mesh top
Material
MDF carcass with aspen veneer, glass front, wire mesh lid
Bedding depth possible
Deep front glass panel takes roughly 10 in of substrate

What it gets right

  • 1,069 sq in external footprint clears the 775 sq in PDSA minimum by a wide margin
  • Solid panels on three sides mean substrate can be piled deep without spilling
  • Mesh lid takes a 12 in wheel mounted from above
  • Front glass makes bedding depth visible, so you can see when it drops below 10 in

What it gets wrong

  • MDF absorbs urine if the liner is breached; it is not a wipe-clean surface
  • Heavy and awkward to move once filled with 10 in of substrate
  • Assembly is not tool-free

Who should buy something else

Skip it if you want to hose the enclosure out. MDF and water are a bad combination, and a glass tank or a coated-steel cage is the better choice for anyone who cleans that way.

Specifications read from Niteangel product listing on 27 September 2026. Floor-area arithmetic is ours and is shown above so you can redo it.

Niteangel Vista Hamster Cage, Large
Our assessment9.1/10
  • Floor area vs threshold10
  • Bedding depth9
  • Wheel compatibility9
  • Material durability7
  • Cleaning access8
$309.95View on Amazon

Price as of November 12, 2026. #ad Disclosure

Number 5 · A single ferret, or a first half of a double

MidWest Critter Nation Single Unit (161)

The same 6 sq ft floor and the same half-inch bars in one level, which is the right buy only if you are certain you will add the second unit.

Clears our threshold6 sq ft on one level, 1/2 in bars
Dimensions
36 x 24 x 25.625 in for the cage section
Continuous floor
36 x 24 = 864 sq in (6 sq ft), one level
Bar spacing
1/2 in horizontal
Material
Powder-coated steel with a deep removable plastic pan
Levels and ramps
One level, with a shelf; a second unit stacks on top later

What it gets right

  • Identical 1/2 in bar spacing safety
  • 6 sq ft of usable floor
  • Cheaper entry point, and the 162 upper unit fits it later

What it gets wrong

  • One level gives a ferret much less vertical variety than two
  • Buying the single then upgrading costs more than buying the double outright

Who should buy something else

Wrong for two or more ferrets. One level of 6 sq ft is enough floor and nowhere near enough structure for a pair that will spend their waking hours in it.

Specifications read from MidWest product listing on 27 September 2026. Floor-area arithmetic is ours and is shown above so you can redo it.

MidWest Critter Nation Single Unit (161)
Our assessment8.3/10
  • Bar spacing safety10
  • Usable floor per level9
  • Cleaning access10
  • Build quality9
  • Vertical space4
$194.99$204.995% offView on Amazon

Price as of November 12, 2026. #ad Disclosure

Number 6 · A smaller room and a single adult ferret

Prevue Pet Products Feisty Ferret Home 485

A cheaper multi-level cage whose 4.3 sq ft per level and 7/8 in bars both land below the standards we apply, which is the honest reason it is last here.

Falls below our threshold4.3 sq ft per level and 7/8 in bars
Dimensions
31 x 20 x 54 in with the stand, 41.5 in high without it
Continuous floor
31 x 20 = 620 sq in (4.3 sq ft) per level
Bar spacing
7/8 in
Material
Powder-coated wire with removable platforms, grille and debris tray
Included fittings
Ramps, shelves and a hammock supplied

What it gets right

  • Fits a 31 in footprint where the MidWest cages need 36 in
  • Hammock, ramps and shelves included
  • Removable grille and tray make cleaning straightforward

What it gets wrong

  • 620 sq in per level is 28 percent less than the Critter Nation
  • 7/8 in bar spacing is close enough to 1 in to carry the same kit risk
  • Lighter gauge wire than the MidWest and Savic cages

Who should buy something else

Not for kits, not for two ferrets, and not if you can fit a 36 in cage. It solves a space problem and does nothing else better.

Specifications read from Prevue 528 listing on 27 September 2026. Floor-area arithmetic is ours and is shown above so you can redo it.

Prevue Pet Products Feisty Ferret Home 485
Our assessment6.4/10
  • Bar spacing safety5
  • Usable floor per level5
  • Cleaning access8
  • Build quality6
  • Value8
$189.99$229.9917% offView on Amazon

Price as of November 12, 2026. #ad Disclosure

The one cage that does the most jobs

If you are not certain which animal you are getting, or you expect to keep more than one species over the next decade, the Critter Nation 162 has the most residual value of anything in this band. It meets the published figures for rats, for ferrets of any age, and for a chinchilla's floor; it splits into two single units; and its half-inch bars and solid shelves suit the three species that care most about both.

What it is not is a hamster or gerbil cage, and that limit is hard. Half-inch bars will not hold a dwarf hamster, and a shallow wire-cage pan will not hold the 20-30cm of substrate the RSPCA publishes for gerbils. Best gerbil cages explains why the whole wire-cage category is wrong for that species rather than merely suboptimal.

Spending $500 badly

Three ways, all common, all worth naming on a page whose whole subject is a budget.

  1. 1.Buying the cage and nothing else. A 1,109 sq in hamster enclosure filled to PDSA's published depth needs roughly 125 liters of substrate, and that is an ongoing cost rather than a one-off. Spending the entire budget on the box and then under-bedding it gets you a worse result than a smaller cage properly filled. Bedding under $25 does the arithmetic.
  2. 2.Buying a cage for a rabbit. The published figure includes exercise space. A hutch plus a permanently attached run gets closer to it than any single enclosure, and costs less than the top of this band.
  3. 3.Buying the single unit intending to upgrade. The 161 is our budget pick and it is honest about this: buying the single and adding the second unit later costs more than buying the double outright. Take the 161 because one level is what you want, not as an instalment plan.

What about building instead of buying

At every band below this one the honest answer included a DIY route, and it still does here for two species. A C&C cage built from storage grids beats anything manufactured on floor area per dollar for guinea pigs — our C&C guide has the build. A converted glass cabinet or a large storage bin clears PDSA's hamster floor figure for a fraction of this band, which is why the bin cage guide exists.

What changes at $500 is that for rats, ferrets and chinchillas the manufactured cage genuinely wins. Half-inch powder-coated steel bars, solid shelves on a lip, full-width doors and a rolling stand are not things a reasonable person builds, and the published bar-spacing requirements for those species are the hardest part of a home build to get right. That is a real shift from the bands below, where the DIY route was usually the better buy.

Prices on this page

Every number here comes from the price layer, which reads each listing at request time and prints the date it read it underneath. On a band page that matters more than usual: if a cage has drifted above $500 since publication you will see its real current price with its real date rather than the number we hoped for, and if a listing stops showing an offer the button asks you to check instead of quoting a figure we cannot stand behind. No price is written into the copy of this or any page on this site.

What this page does not claim

No body in the sources below endorses any product, publishes a price band, or ranks cages. The figures are theirs; the species table, the pass and fail readings and every recommendation are ours, built from manufacturers' own published dimensions and shown so the arithmetic can be redone. We have not tested any of these cages, we publish no durability or build-quality score, and there is no star rating anywhere on this site.

One last thing a cage this size changes: what goes in it. A 36 in level or a 47 in hamster enclosure has the height for the largest wheels on the market, which smaller cages do not - best hamster wheels under $50 and best 12 inch wheels cover that, and for the wire cages here best ferret litter boxes under $25 covers the pan that bolts to their bars.

Questions people ask

What is the best small animal cage under $500?
The MidWest Critter Nation Double Unit, because one purchase meets the published figures for three species: the MSPCA's multi-level rat figure, VCA's ferret figure, and VCA's chinchilla floor figure. For a hamster the answer is different - only the BUCATSTATE 3.0 47 in and the Niteangel Vista Large clear PDSA's 775 sq in with real margin.
Is it worth spending $500 instead of $200 on a small animal cage?
It depends entirely on the species. For rats and ferrets, yes: the extra buys a second storey, which is the dimension those animals actually use. For a hamster it buys margin over the published floor figure rather than a pass. For a guinea pig or a mouse it buys very little, because both are already housed properly in the $100 band.
Which small pets can you house properly for under $500?
On the published figures, seven of the eight we track: guinea pigs, mice, hamsters, rats, ferrets, gerbils and a chinchilla's floor requirement. The exception is the rabbit, whose published figure from the RSPCA and the RWAF is 3m x 2m x 1m including exercise space - about 64.5 sq ft, which no cage or hutch at any price provides.
Why can't you house a rabbit in a $500 cage?
Because the published rabbit figure is not a cage figure. The RSPCA and the RWAF both publish a single enclosed area of 3m x 2m x 1m that includes the exercise space, so a hutch is only ever the shelter half of the setup. A hutch plus a permanently attached run gets closer to the figure than any enclosure, and costs less than the top of this band.
Critter Nation or Ferret Nation at this price?
The Critter Nation for anything young or small, because its half-inch bar spacing holds a ferret kit that the Ferret Nation's one-inch gap does not. The Ferret Nation for adult ferrets that climb, where the wider gap gives better purchase and the cage usually costs less. MidWest does not publish a bar spacing for the Ferret Nation at all, which is covered on our alternatives page.
Should I build a cage instead at this budget?
For guinea pigs and hamsters, a C&C build or a bin cage still beats this band on floor area per dollar. For rats, ferrets and chinchillas the manufactured cage genuinely wins at $500 - half-inch powder-coated bars, solid shelves and full-width doors are hard to reproduce, and the bar-spacing requirement for those species is the part of a home build most likely to go wrong.

Sources