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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Mystery Zone (Skyridge #137) at $19.99 market price (TCGplayer market). Its Delta multiple is 34.2x.
A PSA 10 Mystery Zone (Skyridge #137) is currently shown at $656. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 10.2% gem rate for Mystery Zone (Skyridge #137), with 9 PSA 10 copies out of 88 total PSA grades and a 34.2x Delta. That describes the grading profile; it is not financial advice.
The Reverse Holo version of Mystery Zone (Skyridge #137) is shown at $19.99 market price. That value is for this stored card variant, not the base printing.