PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $5.9 |
| PSA 9 | $34.95 |
| PSA 10 | $175.59 |
| BGS 10 | $228 |
| CGC 10 | $23 |
| SGC 10 | $105 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-holon-research/pokemon-japanese-holon-research-slowpoke-22