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PSA 10: 1 sale, last 45 days · Sep 21, 2026 · checked Oct 27, 2026
PSA 9: Median of 1 PSA 9 sale in the last 90 days, latest 2026-08-31. Grade 9 guide (all graders): $39.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Koga's Grimer (Gym Challenge #78) at $4.58 market price (TCGplayer market). Its Delta multiple is 54.2x.
A PSA 10 Koga's Grimer (Gym Challenge #78) is currently shown at $248, the only PSA 10 sale in the last 45 days (Sep 21, 2026).
GemDelta records a 34.3% gem rate for Koga's Grimer (Gym Challenge #78), with 160 PSA 10 copies out of 466 total PSA grades and a 54.2x Delta. That describes the grading profile; it is not financial advice.
| Date | Listing | Sale |
|---|---|---|
| Sep 21, 2026 | 2000 Pokemon Gym Challenge 1ST EDITION #78/132 KOGA'S GRIMER PSA 10 GEM MINT | $248.08 |
| May 23, 2026 | PSA 10 Koga'S Grimer 1st Edition Gym Challenge 78/132 1st Edition Pokemon Card 78/132 | $99.99 |
| May 18, 2026 | PSA 10 Koga'S Grimer 1st Edition Gym Challenge 78/132 1st Edition Pokemon Card 78/132 | $157.50 |