Cloyster Expedition Base Set #42
Sold prices, not asking · Updated 5 July 2026
Confidence high · How we price →
Cloyster is a Rare Pokémon card from Expedition Base Set (#42), illustrated by Kyoko Umemoto. It's a Stage 1 Water-type Pokémon with 80 HP, evolving from Shellder, weak to Metal ×2. Its current blended market value is $31.46 ungraded, with a PSA 10 worth around $994 — a gem-mint grading premium of roughly 32× the raw value. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.
Prices last updated 5 July 2026.
Price by variant
TCGplayer market price per printing — reverse holo, 1st edition and unlimited often differ sharply.
| Grade | Relative value | Price |
|---|---|---|
| PSA 10pop 14 | 2 sold$994$845–$1,143 | |
| PSA 9pop 44 | $98$31–$149 | |
| PSA 8.5pop 1 | $39$39–$39 | |
| PSA 7pop 24 | $26$20–$30 | |
| PSA 6pop 14 | $19$19–$19 | |
| PSA 5pop 11 | $15$8–$15 |
Price history · Raw
Recent sold prices
Real completed eBay sales, refreshed periodically. Grade read from the listing title. Implausibly priced listings (lots, proxies, empty slabs) and wrong-variant sales are filtered out. Links to eBay are affiliate links — we may earn a commission.
Demand & liquidity
Last sold $20 · Raw · 24 Jun 2026
Population across graders
Only 9% of 159 PSA-graded Cloyster copies are a gem-mint 10 (14 of 159) — the rest grade lower.
Full grade breakdown (9 grades)
Full grade breakdown (5 grades)
Should you grade it?
Only 8.8% of copies gem (PSA 10 best case +$873); most land at PSA 9 or below.
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $994.34 | $89.93 | +$873 | 31.6× |
| PSA 9 | $97.96 | $70.97 | −$4 | 3.1× |
| PSA 8.5 | $39.00 | $70.38 | −$63 | 1.2× |
⚖️ Risk-adjusted return
Best case isn't the whole story. Weighting every grade by how often it actually happens, across 159 PSA-graded copies:
| Likely outcome | Chance | Value |
|---|---|---|
| PSA 10 | 8.8% | $994.00 |
| PSA 9 | 27.7% | $98.00 |
| PSA ≤8 | 63.5% | $31.00 |
Net = graded value − raw value − grading cost (tier fee + ~$20 round-trip shipping), using PSA fees as of 2026-06-28; the paused PSA Value tier is excluded so this isn't overstated. Gem rate is estimated from cumulative PSA population, which skews toward nicer, resubmitted copies — so it overstates the true grade rate. Treat it as a guide, not a guarantee.
We'll email you when this card's value crosses your target.
Where to buy
Market dataCross-market spread, EU price, momentum & community buzz
Cross-market prices
25% spreadCurrently 25% cheaper on PriceCharting than TCGplayer. These are independent market prices for the same card — a wide gap can mean a buying opportunity. Informational only, not arbitrage advice.
Market signal
Derived from this card's 90-day price history, recent trend and cross-market price gap. Informational, not advice.
Card text
Evolves from Shellder.
About the Pokémon
When attacked, it launches its horns in quick volleys. Its innards have never been seen.
Card details
Other Cloyster cards
There are 9 different Cloyster printings — make sure you're valuing the right one. This is Expedition Base Set #42 (Rare).
More from Expedition Base Set
Frequently asked questions
How much is Cloyster (Expedition Base Set #42) worth?
As of 5 July 2026, Cloyster from Expedition Base Set is worth approximately $31.46 ungraded (near-mint), and around $994 in PSA 10 gem mint. Values are blended from real Cardmarket, eBay sold and TCGplayer prices and update daily.
What is the PSA 10 price for Cloyster?
A PSA 10 (gem mint) Cloyster from Expedition Base Set is worth around $994 — roughly 32× the raw ungraded value of $31.46.
Should I grade my Cloyster?
A PSA 10 sells for about $994 versus $31.46 raw — roughly a 32× uplift. Grading is worth it when that premium comfortably beats the grading fee and the card is clean enough to have a real shot at a 10. See the "Should you grade it?" estimate above for net profit per grade.
Is Cloyster rare?
Cloyster is a Rare card from Expedition Base Set (card #42), illustrated by Kyoko Umemoto. Its current blended market value is $31.46 ungraded.