How Much Do Hermit Crabs Cost? (Spend Smart, Not More)

A hermit crab itself costs $3 to $25. That is almost never the real number people end up spending.

The tank setup is where the money actually goes, and it catches most new owners off guard. Here is the full breakdown, from the crab to the setup to what it costs every month after.

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. 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, 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 $10 to $30 total on crabs if you buy small ones. Get different sizes to reduce shell fighting.

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

Total setup: $120 to $300, depending on new versus used and how much you spend on decoration. Add $10 to $20 for a thermostat, which is worth it to prevent overheating.

Ways to Save Money Hermit Crab Tank Setup

• Buy a used tank. Facebook Marketplace, Craigslist, or garage sales. A used 20-gallon often runs $10 to $15 instead of $40+. It does not need to be watertight, since crabs live on land.
• Skip the starter kit. Pet store kits cost $30 to $50 and include things you do not need, sponges, painted shells, gravel, while missing what you do need. Build your own instead.
• Use hardware store play sand. A 50-pound bag costs $5 to $8, enough for a 20-gallon tank, and is cheaper than pet store sand.
• Collect driftwood and leaves for free. Skip cedar and pine, both toxic, and only use leaves from untreated trees.
• Buy in bulk online. Shells, coconut fiber, and marine salt all cost less per unit bought in larger quantities.

What Are Monthly Hermit Crab Costs?

After setup, upkeep is cheap. Monthly costs run $5 to $15: fresh kitchen food ($2 to $5), dried protein like shrimp ($1 to $3), and occasional salt mix, dechlorinator, or cuttlebone ($1 to $5). The total barely changes between 1 crab and 5, since they eat so little.

Yearly and Lifetime Hermit Crab Cost:

Here is what hermit crab ownership costs over time.

• First year: $180 to $480 (setup, crabs, and 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 a day, few pets are cheaper long-term. A dog runs $3 to $8 a day, a cat $2 to $5.

Hidden Hermit Crab Costs to Expect:

• Tank upgrades. If your crabs grow, and they will, budget $30 to $60 for a bigger tank in a few years.
• New shells. A new shell pack every 6 to 12 months costs $5 to $15 as crabs grow.
• Substrate replacement. Replace it every few months to keep it clean. Sand and coconut fiber together cost about $10 to $15.
• Vet visits (rare). An exotic pet vet consultation runs $50 to $150. Most issues are solved by fixing tank conditions, so visits are uncommon.

Conclusion:

A hermit crab costs $3 to $25, setup runs $120 to $300, and upkeep is $5 to $15 a month, about $0.20 to $0.50 a day for a pet that can live 15 to 25 years.

Setup is the real cost, not the crab. Spend properly on it once, and you avoid the far more expensive cost of replacing crabs lost to a bad setup.

(FAQs):