Mewtwo EX

The Best of XY · #42/171 · None · 2017JPN

$18.50

Market price ▲ 0.0% (30d)

Prices as of Aug 14, 2026

486graded pop

79%gem rate

8.8×PSA 10 vs raw

0%off ATH $14.95 · Aug 2026

+$92.45EV to grade — worth it

Market data

Price history

Holofoil▲ 0.0% 7d

Low $17.50Mid $21.00High $49.99

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Live listings

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Graded market

Graded values

PSA 10 report →updated 2026-08-14

Grade 6 est.$14.20

Grade 5 est.$11.96

Grade 4 est.$9.87

Grade 3 est.$8.22

Grade 2 est.$6.73

Grade 1 est.$5.68

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$162.50

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

Graded population census · updated 2026-07-07

PSA410 graded · 322 gem 10

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CGC76 graded · 62 gem 10

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Population data from PriceCharting, updated monthly.

How much is Mewtwo EX #42/171 worth?

Mewtwo EX #42/171 is a None Japanese card from The Best of XY (2017) — today it trades at roughly $18.50 ungraded.

Grading changes the math on this one: a PSA 10 is valued around $162.50, roughly 8.8x the raw price, while a PSA 9 sits near $36.00. 410 copies have been graded to date, and 79% 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 The Best of XY?Full master set guide — every card, chase list, and completion cost→