Invertebrate
Clam (Tridacna / Derasa) — What's a Fair Price?
Based on 30 listings across 2 online reef vendors, updated 2026-07-13.
Lowest today
$14.99
Median
$177.49
Highest today
$299.99
In stock now
8
A typical Clam (Tridacna / Derasa) sells for around $177.49 right now. Anything near $14.99 is at the cheap end of today's market. Prices below are the cheapest current listing per vendor.
Cheapest per vendor
| Vendor | Listing | Price | |
|---|---|---|---|
| Reef Chasers | Clam on a Half Shell (8oz) | $14.99 | view → |
| Top Shelf Aquatics | Derasa Clam | $99.99 | view → |
Shipping differs by vendor (free-shipping thresholds, flat overnight rates) and can change which vendor is cheapest to your door.
Price history
Price history is accumulating — the index collects prices daily, so this chart fills in over the coming weeks.
How this works: we collect every public listing for Clam (Tridacna / Derasa) from tracked vendors daily and compute the spread of in-stock prices. Full methodology.