PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $1 |
| PSA 7 | $9.5 |
| PSA 8 | $19.23 |
| PSA 9 | $31.14 |
| PSA 10 | $121.29 |
| BGS 10 | $158 |
| CGC 10 | $35 |
| SGC 10 | $73 |
TCGplayer market price: $1.14 (as of 2026-08-29)
Market context: ungraded price -49.7% over 30 days. -22.5% over 90 days. PSA 10 premium: 121.3× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-base-set/pokemon-base-set-koffing-51