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Gradesclick to toggle line · max 3 (oldest drops)
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Professor's Research — recent sales (4)
The 4 most recent recorded sales of Professor's Research from S-P Promotional Cards, tagged by grade — the real prices this card has sold for. The interactive chart above plots the full price history.
| Date | Grade | Marketplace | Price (USD) |
|---|---|---|---|
| May 10, 2026 | Raw | Mercari_jp | $9.38 |
| Mar 21, 2026 | Raw | Mercari_jp | $15.28 |
| Dec 16, 2025 | Raw | Mercari_jp | $6.95 |
| Sep 25, 2025 | Raw | Mercari_jp | $18.75 |