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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Mega Aerodactyl EX (Promo #XY98) at $23.44 market price (TCGplayer market). Its Delta multiple is 15.4x.
A PSA 10 Mega Aerodactyl EX (Promo #XY98) is currently shown at $158. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.