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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Undersea Ruins (Aquapolis #138) at $5.78 market price (TCGplayer market). Its Delta multiple is 9.73x.
A PSA 10 Undersea Ruins (Aquapolis #138) is currently shown at $56.60. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 38.7% gem rate for Undersea Ruins (Aquapolis #138), with 12 PSA 10 copies out of 31 total PSA grades and a 9.73x Delta. That describes the grading profile; it is not financial advice.