Cloyster

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

$2.54
Market price 62.7% (1Y)
Prices as of Aug 14, 2026
HP 70WaterStage 1Art · Aya Kusube
320graded pop
26%gem rate
2.7×PSA 10 vs raw
-72%off ATH $9.13 · Jun 2022
$15.85EV to grade — don't
Market data

Printings & price history

Standard$2.54

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Graded market

Graded values

PSA 10 report →updated 2026-08-13
Grade 6 est.$2.41
Grade 5 est.$2.03
Grade 4 est.$1.68
Grade 3 est.$1.40
Grade 2 est.$1.14
Grade 1 est.$0.97

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

PSA 10 price history$94.50

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

Graded population census · updated 2026-07-07

CGC52 graded · 24 gem 10
PSA38 graded · 12 gem 10

Population data from PriceCharting, updated monthly.

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 $2.54 right now, based on the latest market data from August 14, 2026.

Grading changes the math on this one: a PSA 10 is valued around $94.50, roughly 37.2x the raw price, while a PSA 9 sits near $25.99. 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