PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $45 |
| PSA 7 | $31 |
| PSA 8 | $55 |
| PSA 9 | $175 |
| PSA 10 | $810 |
| BGS 10 | $1053 |
| CGC 10 | $167.48 |
| SGC 10 | $486 |
Market context: ungraded price +2.5% over 30 days. +41.1% over 90 days. PSA 10 premium: 18.0× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-vending/pokemon-japanese-vending-koffing-series-ii-109