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PSA 10: PriceCharting; last PSA 10 sale May 4, 2026
GemDelta shows Brock's Onix (Gym Heroes #69) at $6.95 market price (TCGplayer market). Its Delta multiple is 41.8x.
A PSA 10 Brock's Onix (Gym Heroes #69) is currently shown at $306. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 16.8% gem rate for Brock's Onix (Gym Heroes #69), with 74 PSA 10 copies out of 440 total PSA grades and a 41.8x Delta. That describes the grading profile; it is not financial advice.
| Date | Sale |
|---|---|
| May 4, 2026 | $306.27 |
| Mar 27, 2026 | $699.00 |