PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $9.55 |
| PSA 7 | $17 |
| PSA 8 | $21.58 |
| PSA 9 | $62.5 |
| PSA 10 | $620.23 |
| BGS 10 | $806 |
| CGC 10 | $372 |
| SGC 10 | $372 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-topsun/pokemon-japanese-topsun-koffing-blue-back-109