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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Greninja ex (30th Celebration #21) at $49.99 market price (TCGplayer market). Its Delta multiple is 3.58x.
A PSA 10 Greninja ex (30th Celebration #21) is currently shown at $179. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.