Base/#51/102Gembook Valuei·PSA 8As of Jun 14, 2026 · updated daily at 6:00 AM PT
Confidence Strong · weighted median of 11 verified sales
Fair range $48 – $60
Confidence Strong · weighted median of 11 verified sales
Fair range $48 – $60
Koffing
$54#8306 Overall#961 in Base▼ 11.4%30D
1ST EDITION · PSA 8G
Price History▲ 20.0%
Details
SetBase
Number51 / 102
Released1999
PSA population538
Price confidenceStrong
Fair range$48 – $60
Last sale$48 · May 23, 2026
Live listings0 · checked daily
Recent sales
11 verified · 31 shownMay 23, 2026eBay$48−$6
May 22, 2026eBay$50−$4
May 10, 2026eBay$60+$6
May 3, 2026eBay$52−$2
Apr 22, 2026eBay$58+$4
Live listings
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How we price this
Gembook Value is the weighted median of 11 verified eBay sales. Shill bids, unpaid items, and outliers are filtered out — the numbers you see actually cleared.