PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $17.87 |
| PSA 7 | $33.75 |
| PSA 8 | $73.02 |
| PSA 9 | $146.33 |
| PSA 10 | $455.49 |
| BGS 10 | $592 |
| CGC 10 | $299.99 |
| SGC 10 | $273 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-expansion-pack/pokemon-japanese-expansion-pack-onix-no-rarity-95