Undersea Ruins #138

Pricing context for collectors: Over the last 7 days, prices have remained stable at 0.0%, indicating a consolidation phase over sudden breakouts. Observed 90-day bounds of $3.57 and $3.66 create a 2% band, matching a low-volatility profile.

Relative to the 30-day baseline ($3.59), pricing is near equilibrium. Top-grade copies show substantial separation from raw: PSA 10 is pricing +1972% above the current raw benchmark.

PSA 9 is currently around $40.23, while PSA 10 is $75.00.

Undersea Ruins from Aquapolis is currently trading around $3.62. Price action is stable over 7 days, moving only 0.0%.

That is close to the 30-day average of $3.59. Its 90-day trading band runs between $3.57 and $3.66, producing a 2% range and low-volatility behavior.

The listed rarity for this print is Uncommon.

Undersea Ruins appears in Aquapolis, released in 2003. Its card type is Trainer.

The rarity label is Uncommon. Card subtype classification is Stadium.

The card text reads: This card stays in play when you play it. Discard this card if another Stadium card comes into play.

Once during each player's turn (before attacking), that player may flip a coin. If heads, that player chooses 1 of his or her Evolved Pokémon in play and discards the top Evolution card from that Pokémon, devolving it.

Aquapolis was released in 2003. Series classification for this set is E-Card.

The checklist contains 182 cards, placing it in a large expansion range. As of 2026, the set is 23 years old and fits a legacy-era profile.

Within this set, Undersea Ruins is card number 138 with a Uncommon designation.