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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Swampert EX (Promo #XY55) at $11.20 market price (TCGplayer market). Its Delta multiple is 20.2x.
A PSA 10 Swampert EX (Promo #XY55) is currently shown at $106. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.