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PSA 10: PriceCharting · last PSA 10 sale $5600.00 on Aug 17, 2026 · checked Oct 25, 2026
Grade 9: No recent PSA 9 sales. PriceCharting Grade 9 guide, mixing PSA, CGC, BGS, SGC and TAG 9s.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Rocket's Secret Experiment (Gym Challenge #120) at $23.90 market price (TCGplayer market). Its Delta multiple is 125x.
A PSA 10 Rocket's Secret Experiment (Gym Challenge #120) is currently shown at $2,991. GemDelta labels this as a PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 17.5% gem rate for Rocket's Secret Experiment (Gym Challenge #120), with 25 PSA 10 copies out of 143 total PSA grades and a 125x Delta. That describes the grading profile; it is not financial advice.
| Date | Listing | Sale |
|---|---|---|
| Aug 17, 2026 | 2000 Pokemon Gym Challenge 1ST EDITION #120 ROCKET'S SECRET EXPERIMENT PSA 10 | $5600.00 |