PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $1.92 |
| PSA 9 | $16.99 |
| PSA 10 | $40 |
| BGS 10 | $52 |
| CGC 10 | $24 |
| SGC 10 | $24 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-sun-%26-moon/pokemon-sun-%26-moon-psyduck-28