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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Slowking (Great Encounters #28) at $3.22 market price (TCGplayer market). Its Delta multiple is 28.1x.
A PSA 10 Slowking (Great Encounters #28) is currently shown at $79.46. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 10.0% gem rate for Slowking (Great Encounters #28), with 1 PSA 10 copy out of 10 total PSA grades and a 28.1x Delta. That describes the grading profile; it is not financial advice.