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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Mareep (Neo Discovery #58) at $3.39 market price (TCGplayer market). Its Delta multiple is 28.3x.
A PSA 10 Mareep (Neo Discovery #58) is currently shown at $100. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 38.1% gem rate for Mareep (Neo Discovery #58), with 99 PSA 10 copies out of 260 total PSA grades and a 28.3x Delta. That describes the grading profile; it is not financial advice.