Cloyster

FireRed & LeafGreen · #20/112 · Rare · 2004

All 34 Cloyster cards ranked by value →
$37.10
Reverse Holofoil · Market price ▲ 6.7% (30d)
Prices as of Sep 25, 2026
HP 70WaterStage 1Art · Aya Kusube
325graded pop
26%gem rate
52.7×PSA 10 vs raw
-70%off ATH $9.13 · Jun 2022
+$32.41EV to grade — worth it
Market data

Printings & price history

Reverse Holofoil▲ 5.0% 7d$37.10
Low $29.99Mid $35.43

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Graded market

Graded values

PSA 10 report →updated 2026-09-25
Grade 6 est.$32.86
Grade 5 est.$27.67
Grade 4 est.$22.83
Grade 3 est.$19.02
Grade 2 est.$15.57
Grade 1 est.$13.14

Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.

Reverse Holofoil · PSA 10 price history$1,229.22

PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.

Graded population census · updated 2026-09-17

Reverse Holofoil
PSA152 graded · 27 gem 10
CGC82 graded · 21 gem 10

Population data from PriceCharting, updated monthly.

More Cloyster cards all 34 ranked by value →

Abilities

Exoskeleton
Any damage done to Cloyster by attacks is reduced by 20 (after applying Weakness and Resistance).

Attacks

10×Double Bubble
Flip 2 coins. This attack does 10 damage times the number of heads. If either of the coins is heads, the Defending Pokémon is now Paralyzed.
50Shell Attack

How much is Cloyster #20/112 worth?

A raw copy of Cloyster #20/112 (FireRed & LeafGreen, 2004) is worth about $2.78 right now, based on the latest market data from September 25, 2026. Across the 2 printings we track, copies run anywhere from $2.00 to $323.04 depending on the version you're holding.

Grading changes the math on this one: a PSA 10 is valued around $146.60, roughly 52.7x the raw price, while a PSA 9 sits near $29.58. 152 copies have been graded to date, and 18% of them came back a 10 — worth knowing before you pay grading fees.

These figures come from nightly market-data syncs verified against completed sales. Use the chart above to see the trend before you buy or sell.

Collecting FireRed & LeafGreen?Full master set guide — every card, chase list, and completion cost→