PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $1.99 |
| PSA 8 | $5 |
| PSA 9 | $16.9 |
| PSA 10 | $53.75 |
| BGS 10 | $70 |
| CGC 10 | $75 |
| SGC 10 | $32 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-go/pokemon-go-blissey-cosmos-holo-52