Cloyster

151 · #91/165 · Uncommon · 2023

$14.76
Master Ball · Market price 24.7% (1Y)
Prices as of Aug 14, 2026
HP 130WaterStage 1Art · Nelnal
825graded pop
88%gem rate
131.5×PSA 10 vs raw
-73%off ATH $1.28 · Jul 2025
+$3.87EV to grade — marginal
Market data

Printings & price history

Master Ball$14.76

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Graded market

Graded values

PSA 10 report →updated 2026-08-14
Grade 6 est.$14.02
Grade 5 est.$11.81
Grade 4 est.$9.74
Grade 3 est.$8.12
Grade 2 est.$6.64
Grade 1 est.$5.61

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

Master Ball · PSA 10 price history$69.99

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

Graded population census · updated 2026-07-08

Master Ball
PSA641 graded · 576 gem 10
CGC112 graded · 98 gem 10

Population data from PriceCharting, updated monthly.

Attacks

80Protect Charge
During your opponent's next turn, this Pokémon takes 80 less damage from attacks (after applying Weakness and Resistance).

Cloyster that live in seas with harsh tidal currents grow large, sharp spikes on their shells.

How much is Cloyster #91/165 worth?

A raw copy of Cloyster #91/165 (151, 2023) is worth about $0.22 right now, based on the latest market data from August 14, 2026. Across the 3 printings we track, copies run anywhere from $0.01 to $1,000.00 depending on the version you're holding.

Grading changes the math on this one: a PSA 10 is valued around $31.56, roughly 143.5x the raw price, while a PSA 9 sits near $10.70. 641 copies have been graded to date, and 90% 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 151?Full master set guide — every card, chase list, and completion cost