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PSA 10: PriceCharting; last PSA 10 sale Jun 24, 2026
GemDelta shows Professor's Research (Sword & Shield #201) at $4.81 market price (TCGplayer market). Its Delta multiple is 6.34x.
A PSA 10 Professor's Research (Sword & Shield #201) is currently shown at $26.07. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 71.6% gem rate for Professor's Research (Sword & Shield #201), with 380 PSA 10 copies out of 531 total PSA grades and a 6.34x Delta. That describes the grading profile; it is not financial advice.
| Date | Sale |
|---|---|
| Jun 24, 2026 | $32.00 |
| Jun 17, 2026 | $28.00 |
| Apr 13, 2026 | $10.50 |
| Apr 6, 2026 | $7.50 |
| Mar 1, 2026 | $25.00 |