Graded Market · 30 completed sales
Koffing graded prices.
As of August 21, 2026, Koffing (Expedition Base Set #114) in PSA 10 sells for a median of $79.95, based on 30 real eBay completed sales; the raw copy’s reference price is $5.16 — a 15.5× grading premium at the top grade.
Across Expedition Base Set, PSA 10 copies sell for 27.2× their raw reference price on average (56 cards, 339 PSA 10 completed sales tracked).
PSA · Koffing
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Gem Mint 10 | $79.95 | 10 | 15.5× |
| Mint 9 | $32.50 | 7 | 6.3× |
| NM-MT 8 | $48.30 | 3 | 9.4× |
CGC · Koffing
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Gem Mint 10 | $21.50 | 4 | 4.2× |
Medians of real eBay completed sales per grade; small sample sizes deserve caution. Prices are dated reference values — cite them with the as-of date above. Attribution: CardIntel (cardintel.io). See the methodology.