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PSA 10: 1 sale, last 45 days · Oct 15, 2026 · checked Oct 27, 2026
PSA 9: Median of 3 PSA 9 sales in the last 90 days, latest 2026-10-08. Grade 9 guide (all graders): $24.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Mewtwo GX (2020 Battle Academy #31) at $9.03 market price (TCGplayer market). Its Delta multiple is 13.8x.
A PSA 10 Mewtwo GX (2020 Battle Academy #31) is currently shown at $125, the only PSA 10 sale in the last 45 days (Oct 15, 2026).
GemDelta records a 24.2% gem rate for Mewtwo GX (2020 Battle Academy #31), with 318 PSA 10 copies out of 1,315 total PSA grades and a 13.8x Delta. That describes the grading profile; it is not financial advice.
| Date | Listing | Sale |
|---|---|---|
| Oct 15, 2026 | PSA 10 Pokemon 2020 Mewtwo GX 31/68 Battle Academy English 31/68 | $125.00 |
| Jul 19, 2026 | 2020 Pokemon Battle Academy Mewtwo GX #31 Battle Academy PSA 10 #31 | $117.29 |
| Jul 8, 2026 | 2020 Pokemon Battle Academy Mewtwo GX #31 Battle Academy PSA 10 #31 | $150.00 |
| May 26, 2026 | 2020 Pokemon Battle Academy Mewtwo GX #31 Battle Academy PSA 10 #31 | $130.00 |
| May 10, 2026 | 2020 Pokemon Battle Academy #31 Mewtwo GX PSA 10 GEM MINT #31 | $135.50 |