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PSA 10: PriceCharting; last PSA 10 sale Jun 29, 2026
GemDelta shows Koga's Koffing (Gym Challenge #79) at $2.68 market price (TCGplayer market). Its Delta multiple is 43.6x.
A PSA 10 Koga's Koffing (Gym Challenge #79) is currently shown at $153. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 42.0% gem rate for Koga's Koffing (Gym Challenge #79), with 214 PSA 10 copies out of 510 total PSA grades and a 43.6x Delta. That describes the grading profile; it is not financial advice.
| Date | Sale |
|---|---|
| Jun 29, 2026 | $239.52 |
| May 24, 2026 | $152.50 |
| Apr 1, 2026 | $134.50 |
| Mar 30, 2026 | $152.50 |
| Mar 10, 2026 | $151.00 |
| Mar 3, 2026 | $255.00 |