PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $46.96 |
| PSA 7 | $31 |
| PSA 8 | $56 |
| PSA 9 | $175 |
| PSA 10 | $960 |
| BGS 10 | $1248 |
| CGC 10 | $142.5 |
| SGC 10 | $576 |
Market context: ungraded price +4.4% over 30 days. +6.9% over 90 days. PSA 10 premium: 20.4× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-vending/pokemon-japanese-vending-koffing-series-ii-109