What a Cleanup Crew Actually Costs
Snails, hermits, and the rest of the janitorial staff, priced per piece across vendors — and why shipping math dominates this purchase.
Published July 29, 2026 · figures recomputed from data through September 10, 2026 · by Reef Price Index
Nobody brags about their cleanup crew, but almost every tank buys one — snails and hermits are the highest-volume, lowest-glamour purchase in the hobby. They're also the easiest place to misread prices, because vendors mix single-animal listings with 5-, 10-, 25-, even 100-lots. A "$58.95 snail listing" and a "$3.99 snail" can be the same snail. So we normalized every in-stock listing to a per-animal price using the pack size stated in the listing.
What janitors cost per head
| Animal | Per-piece low | Per-piece median | Per-piece high | Listings (packs) |
|---|---|---|---|---|
| Margarita Snail | $1.38 | $1.70 | $2.24 | 5 (4) |
| Hermit Crab | $1.50 | $1.99 | $14.99 | 13 (5) |
| Cerith Snail | $1.80 | $2.30 | $2.99 | 4 (3) |
| Emerald Crab | $5.42 | $6.50 | $7.99 | 6 (4) |
| Nassarius Snail | $3.99 | $6.65 | $9.99 | 6 (3) |
| Trochus Snail | $6.45 | $6.85 | $6.99 | 5 (4) |
| Conch | $5.99 | $14.99 | $14.99 | 3 (0) |
| Sea Urchin | $14.99 | $26.24 | $59.99 | 9 (0) |
Per-piece figures divide each listing's price by the pack quantity its own variant or title states; listings that state no quantity count as singles. The high end of a range is usually a premium species variant (a Halloween hermit is not a blue-leg), not pack math gone wrong.
The bulk curve, illustrated
Pack pricing rewards volume — here's the widest real example in today's data, "Margarita Snail":
| Quantity | Price | Per piece |
|---|---|---|
| 1 | $2.24 | $2.24 |
| 5 | $9.25 | $1.85 |
| 10 | $17.00 | $1.70 |
| 25 | $38.75 | $1.55 |
| 50 | $69.00 | $1.38 |
The real cost driver: shipping math
Livestock ships overnight, and overnight boxes cost real money regardless of what's inside. A handful of snails rarely justifies its own box — which is why CUC is best bought either as an add-on to a livestock order you're already placing, at a local store where the per-piece price matters more than pack curves, or as one deliberate bulk order using the curves above. Per-piece price is the number to compare; the box fee is the number that decides.
Sizing honestly
Vendor "crew calculators" are sales tools; the honest sizing rule is to stock for the algae you have, not the algae you fear. Start with a modest mixed crew, see what the tank actually grows, and reorder — the per-piece medians above make underbuying cheap to correct. A crew that's too large starves and dies quietly, and dead snails cost you twice: the purchase and the ammonia. Whatever mix you choose, count per piece across the whole basket before comparing vendors.