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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Dialga (Promo #DP26) at $20.90 market price (TCGplayer market). Its Delta multiple is 303x.
A PSA 10 Dialga (Promo #DP26) is currently shown at $1,846. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 1.27% gem rate for Dialga (Promo #DP26), with 3 PSA 10 copies out of 236 total PSA grades and a 303x Delta. That describes the grading profile; it is not financial advice.