PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $149 |
| PSA 8 | $15.5 |
| PSA 9 | $193.09 |
| PSA 10 | $660 |
| BGS 10 | $858 |
| CGC 10 | $136.1 |
| SGC 10 | $396 |
Market context: ungraded price +0.0% over 30 days. +294.3% over 90 days. PSA 10 premium: 4.4× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-web/pokemon-japanese-web-slowpoke-1st-edition-12