Grookey

Terastal Fest ex · #6/187 · Common · 2024JPN

$6.69

Standard · Market price ▲ 20.1% (1Y)

Prices as of Aug 14, 2026

Master Ball Pattern Standard

155graded pop

92%gem rate

6.3×PSA 10 vs raw

−$1.70EV to grade — don't

Market data

Printings & price history

Standard$6.69

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Live listings

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Graded market

Graded values

PSA 10 report →updated 2026-08-14

Grade 6 est.$6.36

Grade 5 est.$5.35

Grade 4 est.$4.42

Grade 3 est.$3.68

Grade 2 est.$3.01

Grade 1 est.$2.54

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$28.49

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

Graded population census · updated 2026-07-08

PSA155 graded · 142 gem 10

12345678910

Population data from PriceCharting, updated monthly.

How much is Grookey #6/187 worth?

Right now (August 14, 2026) the going rate for an ungraded Grookey #6/187 from Terastal Fest ex is about $4.49. Across the 2 printings we track, copies run anywhere from $2.99 to $6.68 depending on the version you're holding.

Grading changes the math on this one: a PSA 10 is valued around $28.49, roughly 6.3x the raw price, while a PSA 9 sits near $20.18. 155 copies have been graded to date, and 92% of them came back a 10 — worth knowing before you pay grading fees.

Prices on this page refresh nightly from live TCGplayer market data and are cross-checked against actual sold prices, so a single inflated listing never becomes "the price". The chart above has the full history.

Collecting Terastal Fest ex?Full master set guide — every card, chase list, and completion cost→