PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $2.24 |
| PSA 9 | $16.25 |
| PSA 10 | $40.39 |
| BGS 10 | $53 |
| CGC 10 | $20.5 |
| SGC 10 | $24 |
Market context: ungraded price +8.2% over 30 days. +9.8% over 90 days. PSA 10 premium: 18.0× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-sky-legend/pokemon-japanese-sky-legend-koffing-27