PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $69.8 |
| PSA 7 | $49.99 |
| PSA 8 | $99.99 |
| PSA 9 | $262 |
| PSA 10 | $829 |
| BGS 10 | $1078 |
| CGC 10 | $299 |
| SGC 10 | $497 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-promo/pokemon-japanese-promo-wooper-p-22