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PSA 10: PriceCharting · last PSA 10 sale $239.52 on Jun 29, 2026 · checked Oct 25, 2026
PSA 9: Median of 2 PSA 9 sales in the last 90 days, latest 2026-10-06. Grade 9 guide (all graders): $30.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Koga's Koffing (Gym Challenge #79) at $2.82 market price (TCGplayer market). Its Delta multiple is 54.1x.
A PSA 10 Koga's Koffing (Gym Challenge #79) is currently shown at $153. GemDelta labels this as a PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 41.2% gem rate for Koga's Koffing (Gym Challenge #79), with 214 PSA 10 copies out of 520 total PSA grades and a 54.1x Delta. That describes the grading profile; it is not financial advice.
| Date | Listing | Sale |
|---|---|---|
| Jun 29, 2026 | 2000 Pokemon Gym Challenge Koga's Koffing 1st Edition #79 PSA 10 #79 | $239.52 |
| May 24, 2026 | Pokemon Koga's Koffing Gym Challenge 1st Edition #79 PSA 10 Gem Mint | $152.50 |