Grumpig

Crystal Guardians · #20/100 · Rare · 2006

$0.93

Market price ▲ 2.2% (30d)

Prices as of Jul 26, 2026

Normal Reverse Holofoil

HP 80PsychicStage 1Art · Mitsuhiro Arita

186graded pop

16%gem rate

4.2×PSA 10 vs raw

-56%off ATH $3.80 · Jul 2025

−$11.46EV to grade — don't

Printings & price history

Normal▲ 1.1% 7d$0.93

Low $0.48Mid $0.98

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Graded values

updated 2026-07-26

Grade 6 est.$1.61

Grade 5 est.$1.35

Grade 4 est.$1.12

Grade 3 est.$0.93

Grade 2 est.$0.76

Grade 1 est.$0.64

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$77.87

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

Graded population census · updated 2026-07-07

PSA127 graded · 13 gem 10

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CGC59 graded · 16 gem 10

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Population data from PriceCharting, updated monthly.

Abilities

Thick Fat

Any damage done to Grumpig by attacks from Fire Pokémon and Water Pokémon is reduced by 30 (after applying Weakness and Resistance).

Attacks

10×Circular Steps

Does 10 damage times the number of Pokémon in play (both yours and your opponent's), excluding Grumpig.

How much is Grumpig #20/100 worth?

Right now (July 26, 2026) the going rate for an ungraded Grumpig #20/100 from Crystal Guardians is about $0.93. Across the 2 printings we track, copies run anywhere from $0.48 to $499.50 depending on the version you're holding.

Grading changes the math on this one: a PSA 10 is valued around $77.87, roughly 83.7x the raw price, while a PSA 9 sits near $23.62. 127 copies have been graded to date, and 10% 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.