PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $5.31 |
| PSA 7 | $9.82 |
| PSA 8 | $9.99 |
| PSA 9 | $19.99 |
| PSA 10 | $57.79 |
| BGS 10 | $75 |
| CGC 10 | $21.99 |
| SGC 10 | $35 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-25th-anniversary-promo/pokemon-japanese-25th-anniversary-promo-imposter-professor-oak-4