PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $5.22 |
| PSA 7 | $17 |
| PSA 8 | $20.75 |
| PSA 9 | $300 |
| PSA 10 | $1637.5 |
| BGS 10 | $2129 |
| CGC 10 | $983 |
| SGC 10 | $983 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-great-encounters/pokemon-great-encounters-dialga-cosmos-holo-16