PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $26.34 |
| PSA 7 | $36.75 |
| PSA 8 | $49 |
| PSA 9 | $75 |
| PSA 10 | $584.14 |
| BGS 10 | $759 |
| CGC 10 | $85.5 |
| SGC 10 | $350 |
TCGplayer market price: $34.04 (as of 2026-07-05)
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-base-set/pokemon-base-set-koffing-1st-edition-51