PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $99.48 |
| PSA 7 | $388 |
| PSA 8 | $449.99 |
| PSA 9 | $700 |
| PSA 10 | $6665.26 |
| BGS 10 | $8665 |
| CGC 10 | $3999 |
| SGC 10 | $3999 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-promo/pokemon-japanese-promo-slowking-card