Gym Challenge/#79/132Gembook Valuei·PSA 9As of Jun 15, 2026 · updated daily at 6:00 AM PT
Confidence Limited · weighted median of 3 verified sales
Fair range $30 – $31
Confidence Limited · weighted median of 3 verified sales
Fair range $30 – $31
Koga's Koffing
$30#10694 Overall#657 in Gym Challenge▲ 1.7%SET · 30D
1ST EDITION · PSA 9G
Price History▲ 3.3%
Details
SetGym Challenge
Number79 / 132
Released2000
PSA population218
Price confidenceLimited
Fair range$30 – $31
Last sale$31 · Jun 4, 2026
Live listings1 · checked daily
Recent sales
3 verified · 3 shownJun 4, 2026eBay$31—
Apr 12, 2026eBay$29—
Mar 11, 2026eBay$30—
Live listings
1 live eBay listing — see the Listings page.
How we price this
Gembook Value is the weighted median of 3 verified eBay sales. Shill bids, unpaid items, and outliers are filtered out — the numbers you see actually cleared.