PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $5.38 |
| PSA 9 | $59.25 |
| PSA 10 | $187.95 |
| BGS 10 | $244 |
| CGC 10 | $113 |
| SGC 10 | $113 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-undone-seal/pokemon-japanese-undone-seal-whismur-1st-edition-62