PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $21.9 |
| PSA 7 | $19.99 |
| PSA 8 | $43.1 |
| PSA 9 | $128.51 |
| PSA 10 | $900 |
| BGS 10 | $1170 |
| CGC 10 | $540 |
| SGC 10 | $540 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-topsun/pokemon-japanese-topsun-slowpoke-blue-back-79