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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Grass Energy (Evolutions #91) at $0.18 market price (TCGplayer market). Its Delta multiple is 39.7x.
A PSA 10 Grass Energy (Evolutions #91) is currently shown at $70.73. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 14.3% gem rate for Grass Energy (Evolutions #91), with 4 PSA 10 copies out of 28 total PSA grades and a 39.7x Delta. That describes the grading profile; it is not financial advice.