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PSA 10: Median of 2 sales, last 45 days · newest Oct 7, 2026 · checked Oct 25, 2026
PSA 9: Median of 1 PSA 9 sale in the last 90 days, latest 2026-10-01. Grade 9 guide (all graders): $30.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Marnie (Promo #SWSH121) at $29.18 market price (TCGplayer market). Its Delta multiple is 5.31x.
A PSA 10 Marnie (Promo #SWSH121) is currently shown at $155, the median of 2 PSA 10 sales in the last 45 days (newest Oct 7, 2026).
GemDelta records a 28.5% gem rate for Marnie (Promo #SWSH121), with 1,000 PSA 10 copies out of 3,504 total PSA grades and a 5.31x Delta. That describes the grading profile; it is not financial advice.