How Much Do Hermit Crabs Cost? (True Price Revealed)

A hermit crab itself costs about $3 to $25 depending on its size. But the crab is the cheap part. The real cost is the tank setup, which runs about $120 to $300 for everything done right. After that, monthly costs drop to about $5 to $15. So the total first-year cost of owning hermit crabs is roughly $180 to $480, and every year after that costs very little. This guide breaks down every cost you will face – from the crab itself to the full setup to the ongoing monthly budget.

How Much Does the Crab Itself Cost?

The price depends on the size of the crab:

• Small crabs. $3 to $7 at most pet stores. These are the most common size sold and the cheapest option.
• Medium crabs. $7 to $15. Harder to find in stores but available online and at reptile expos.
• Large crabs. $15 to $25. Less common and usually special ordered or found at specialty shops.
• Jumbo crabs. $20 to $45+. Rare in stores. Usually found at expos, specialty breeders, or adoption groups.

Since hermit crabs need at least 3 companions, plan to spend about $10 to $30 total on crabs if you buy small ones. Get different sizes to reduce shell fighting.

Bonus: How Much Does Hermit Crab Food Cost?

The Full Tank Setup Cost

This is where the real money goes. Here is what a proper hermit crab habitat costs:

Item	Price Range	Notes
Glass tank (20-gal)	$25 – $50	Used tanks are much cheaper
Glass or plexiglass lid	$10 – $20	Essential for humidity
Play sand (50 lb bag)	$5 – $8	1-2 bags needed
Coconut fiber (eco earth)	$5 – $10	Mix with sand 1:5 ratio
Under-tank heat mat	$15 – $25	Stick to back wall
Digital thermometer	$5 – $10	Probe style is best
Digital hygrometer	$5 – $10	Place at substrate level
2 water dishes	$5 – $15	Deep enough to submerge
Marine salt mix	$8 – $12	Lasts 3-4 months
Water dechlorinator	$4 – $7	Lasts 4-6 months
Extra shells (5-10 pack)	$5 – $15	Natural, unpainted only
Climbing structures	$10 – $25	Driftwood, cork bark, hides
Cuttlebone	$2 – $4	Bird section at pet store
Food dish	$2 – $5	Ceramic or plastic

Total setup cost: $120 to $300 depending on whether you buy new or used, and how much you spend on decorations. A thermostat for the heat mat adds another $10 to $20 but is highly recommended to prevent overheating.

5 Ways to Save Money on Setup

• Buy a used tank. Check Facebook Marketplace, Craigslist, or garage sales. Used 20-gallon tanks often sell for $10 to $15 instead of $40+. They do not need to be watertight since hermit crabs live on land.
• Skip the starter kit. Pet store hermit crab kits cost $30 to $50 but include things you do not need (sponges, painted shells, gravel) and miss things you do need (heat mat, deep substrate, salt mix). Build your own setup instead.
• Use play sand from the hardware store. A 50-pound bag costs $5 to $8 at any hardware store. That is enough for a 20-gallon tank. Much cheaper than pet store sand.
• Collect driftwood and leaves. Climbing structures and leaf litter can be free if you collect them from nature. Just make sure the wood is not cedar or pine (both are toxic) and the leaves are from untreated trees.
• Buy in bulk online. Shell packs, coconut fiber, and marine salt are all cheaper per unit when bought in larger quantities online.

Bonus: Do Hermit Crabs Make Noise?

What Are the Monthly Costs?

After the initial setup, hermit crabs are very cheap to maintain. Monthly costs run about $5 to $15 and include fresh food from your kitchen ($2 to $5), dried protein like shrimp ($1 to $3), and occasional replacements for salt mix, dechlorinator, and cuttlebone ($1 to $5). The cost barely changes whether you have 1 crab or 5 crabs because they eat such tiny amounts.

Yearly and Lifetime Cost

Here is what hermit crab ownership costs over time:

• First year: $180 to $480 (setup + crabs + monthly costs)
• Each year after: $60 to $180 (food, salt, dechlorinator, occasional shells)
• Over 10 years: $720 to $2,100
• Over 25 years: $1,620 to $4,800
• Cost per day: $0.20 to $0.50

At $0.20 to $0.50 per day, hermit crabs are one of the cheapest pets you can own over their lifetime. Compare that to a dog at $3 to $8 per day or a cat at $2 to $5 per day and hermit crabs are a bargain.

Hidden Costs Most People Forget

• Tank upgrades. If your crabs grow (and they will), you may need a bigger tank in a few years. Budget $30 to $60 for an upgrade.
• New shells. As crabs grow, they need larger shells. A new shell pack every 6 to 12 months costs $5 to $15.
• Substrate replacement. Replace substrate every few months to keep it clean. A bag of sand and coconut fiber costs about $10 to $15 total.
• Vet visits (rare). If you can find an exotic pet vet, a consultation costs about $50 to $150. Most hermit crab health issues are solved by fixing tank conditions, so vet visits are uncommon.

Bonus: What Do Hermit Crabs Like?

Conclusion:

A hermit crab costs $3 to $25, the full setup costs $120 to $300, and monthly costs run $5 to $15. That works out to about $0.20 to $0.50 per day for a pet that can live 15 to 25 years. The setup is the big upfront cost, but after that, hermit crabs are one of the most affordable pets in the world. Spend the money on a proper setup from day one and you will save yourself the cost of replacing crabs that die from bad conditions.

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