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PSA 10: 45-day PSA 10 sold-comp median
GemDelta shows Blastoise GX (Promo #SM189) at $21.68 market price (TCGplayer market). Its Delta multiple is 22.5x.
A PSA 10 Blastoise GX (Promo #SM189) is currently shown at $450. GemDelta labels this as a 45-day PSA 10 sold-comp median.
GemDelta records a 26.8% gem rate for Blastoise GX (Promo #SM189), with 540 PSA 10 copies out of 2,015 total PSA grades and a 22.5x Delta. That describes the grading profile; it is not financial advice.
| Date | Sale |
|---|---|
| Jul 30, 2026 | $450.00 |
| Jul 12, 2026 | $385.00 |
| Jun 26, 2026 | $380.00 |
| Jun 17, 2026 | $465.26 |
| Jun 14, 2026 | $378.90 |
| May 29, 2026 | $445.00 |
| May 20, 2026 | $350.00 |
| May 11, 2026 | $310.00 |
| May 9, 2026 | $350.00 |
| May 8, 2026 | $400.00 |
| May 5, 2026 | $349.99 |
| May 5, 2026 | $449.00 |
Showing the latest 12 of 25 stored PSA 10 comps.