PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $6.5 |
| PSA 8 | $10.5 |
| PSA 9 | $31.99 |
| PSA 10 | $502.5 |
| BGS 10 | $653 |
| CGC 10 | $74.99 |
| SGC 10 | $302 |
TCGplayer market price: $9.5 (as of 2026-10-20)
Market context: ungraded price +0.0% over 30 days. +16.7% over 90 days. PSA 10 premium: 77.3× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-holon-research/pokemon-japanese-holon-research-slowpoke-1st-edition-22