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PSA 10: Median of 29 sales, last 45 days · newest Oct 23, 2026 · checked Oct 25, 2026
PSA 9: Median of 24 PSA 9 sales in the last 90 days, latest 2026-10-24. Grade 9 guide (all graders): $494.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Mewtwo & Mew GX (Promo #SM191) at $360 market price (TCGplayer market). Its Delta multiple is 4.80x.
A PSA 10 Mewtwo & Mew GX (Promo #SM191) is currently shown at $1,730, the median of 29 PSA 10 sales in the last 45 days (newest Oct 23, 2026).
GemDelta records a 50.1% gem rate for Mewtwo & Mew GX (Promo #SM191), with 9,680 PSA 10 copies out of 19,310 total PSA grades and a 4.80x Delta. That describes the grading profile; it is not financial advice.
Showing the latest 12 of 29 stored PSA 10 comps.