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PSA 10: PriceCharting · last PSA 10 sale $21.50 on Aug 6, 2026 · checked Oct 26, 2026
PSA 9: Median of 1 PSA 9 sale in the last 90 days, latest 2026-09-27. Grade 9 guide (all graders): $75.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Undersea Ruins (Aquapolis #138) at $14.99 market price (TCGplayer market). Its Delta multiple is 22.0x.
A PSA 10 Undersea Ruins (Aquapolis #138) is currently shown at $330. GemDelta labels this as a PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 13.3% gem rate for Undersea Ruins (Aquapolis #138), with 8 PSA 10 copies out of 60 total PSA grades and a 22.0x Delta. That describes the grading profile; it is not financial advice.
The Reverse Holo version of Undersea Ruins (Aquapolis #138) is shown at $14.99 market price. That value is for this stored card variant, not the base printing.
| Date | Listing | Sale |
|---|---|---|
| Aug 6, 2026 | 2003 POKEMON AQUAPOLIS #138 UNDERSEA RUINS-REVERSE FOIL PSA 10 #138 | $21.50 |
| Aug 1, 2026 | 2003 POKEMON AQUAPOLIS #138 UNDERSEA RUINS-REVERSE FOIL PSA 10 #138 | $749.99 |