PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $30 |
| PSA 8 | $38 |
| PSA 9 | $63.06 |
| PSA 10 | $665.25 |
| BGS 10 | $865 |
| CGC 10 | $399 |
| SGC 10 | $399 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-promo/pokemon-promo-psyduck-stamped-SM199