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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Professor Oak's New Theory (HeartGold & SoulSilver #101) at $0.80 market price (TCGplayer market). Its Delta multiple is 41.3x.
A PSA 10 Professor Oak's New Theory (HeartGold & SoulSilver #101) is currently shown at $45.84. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 0.00% gem rate for Professor Oak's New Theory (HeartGold & SoulSilver #101), with 0 PSA 10 copies out of 4 total PSA grades and a 41.3x Delta. That describes the grading profile; it is not financial advice.