Invertebrate
Sea Urchin — What's a Fair Price?
Based on 8 in-stock listings across 3 online reef vendors, updated September 5, 2026.
A typical Sea Urchin sells for around $22.49 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 | |
|---|---|---|---|
| Top Shelf Aquatics | Rock-Boring Urchin | $14.99 | view → |
| World Wide Corals | Pincushion Urchin | $15.99 | view → |
| Reefwise | Pincushion Urchin | $19.99 | view → |
Shipping differs by vendor (free-shipping thresholds, flat overnight rates) and can change which vendor is cheapest to your door.
Reading today's numbers
Today's 8 in-stock listings span $14.99 to $59.99 — the high end is 4.0× the low. For invertebrates, a gap like that usually reflects listings at different sizes or grades rather than one vendor simply overcharging. The $22.49 median is the fairest single benchmark: half of those listings sit at or below it.
Keeping it alive once it arrives
Disclosure: the Chewy links below are affiliate links — if you buy through them we earn a commission, at no extra cost to you. This never affects the prices or vendor rankings above. Details.
Invertebrates tolerate swings in salinity and water chemistry worse than most fish do, so consistent mixing and regular testing matter more here than anywhere else in the tank. Chewy — a general pet retailer that sells no live coral or marine fish, and is not one of the vendors this index tracks — carries reef salt mixes, saltwater test kits, marine fish food, and coral and invertebrate food.
Price history
The market median for Sea Urchin has changed 28 times in 55 days of tracking. Median shifts here usually come from vendor promotion events or the in-stock mix changing rather than gradual drift (how these prices actually behave) — genuine repricings land on the price drops page as we observe them.
Common questions
Every answer below is computed from this page's own numbers at build time, and updates with the daily data refresh.
- How much does Sea Urchin cost?
- The median price is $22.49, based on 8 in-stock listings across 3 online reef vendors as of September 5, 2026. The range runs from $14.99 at the low end to $59.99 at the high end.
- Which vendor has the cheapest Sea Urchin?
- Top Shelf Aquatics has the lowest current listing at $14.99, as of September 5, 2026. Prices exclude shipping, which differs by vendor and can change which store is cheapest to your door.
- Which vendors sell Sea Urchin?
- 3 of the online reef vendors the index tracks list it as of September 5, 2026: Top Shelf Aquatics at $14.99, World Wide Corals at $15.99 and Reefwise at $19.99. Each figure is that vendor's cheapest current listing.
- Has the price of Sea Urchin changed?
- Yes. The market median has changed 28 times across the 55 days the index has tracked it. Shifts here usually come from vendor promotion events or the in-stock mix changing rather than gradual drift.
- Is Sea Urchin in stock right now?
- 8 of the 11 listings the index tracks for it were in stock as of September 5, 2026, across 3 vendors.
Cite this page: Reef Price Index, "Sea Urchin price," data through September 5, 2026. https://reefpriceindex.com/species/urchin
Related reading from our data
We check Sea Urchin prices at every vendor we track, every day. How the index works.