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Undersea Ruins

Aquapolis
Uncommon · #138/147

Undersea Ruins #138/147 (Aquapolis) is worth about $6.57 today, the TCGplayer market price for any condition as of 2026-10-29, up 7% over 30 days.

price trend and the high since we began tracking: more ↓

Undersea Ruins #138/147 is trending up: $6.57 today, up 7% in 30 days and at its highest since we began tracking (2024-02-08), set 2026-10-22, and 2.0x its low of $3.26 (2024-06-02). TCGplayer market price as of 2026-10-29, tracked daily since 2024-02-08. chart →

today's biggest Pokemon movers →most valuable Pokemon cards →
illustrated by Midori Harada

Price data for your app or store: free API key · daily history since 2024 · CSV download

$6.57
▲ 6.7% · 30d
Normal · TCGplayer market · daily · any condition ↗
condition prices from JustTCG listings, as of 2026-10-27
condition prices as of 2026-10-27; the chart and boards use the daily product tape
buy:TCGplayer ↗eBay ↗all marketplaces ↓
Recent sales
eBay sold ↗
every completed sale, live
PSA 10
no graded listings
eBay sold search ↗
vs HIGH
AT HIGH
highest since 2024-02-08
LOADING TAPE

WORTH GRADING?

WHERE TO BUY AND SELL

TCGplayer
$4.51
lowest listing · market $6.57
buy on TCGplayer ↗
eBay · raw
no listings
no scan yet
shop active ↗ · sold ↗
eBay · PSA 10
no graded listings
no graded asks in the last scan
PSA 10 sold listings ↗
Buy-side estimate
$6.57
THIN
a patient buyer pays about $6.57 delivered, from live asks, not sales
show the work →
TCGplayer only, no eBay scan yet
TCGplayer market$6.57verify ↗
TCGplayer lowest ask$4.51
Single source: TCGplayer market (no usable eBay asks in the last scan).
v2 · the full published formula →
sell to a card shop: $4.60 cash · $5.26 store credit · about 70% / 80% of market
The verdict · premium
Cards at their high after a month up 5-25% were higher 90 days later 75% of the time in our archive since 2024 (24,817 cases). That rate is mostly the 202448 to 5877 to 86marketplace fees of about 13% most short holds lose money. Use it to time a sale, not to flip.
The median move, the verdict and the grade-worthy math: try Premium free for 7 days →
GAME DATA[ + ] SHOW
CARD TYPE
Stadium
CARD TEXT
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.

MORE BY MIDORI HARADA

FULL CATALOG →
Gengar & Mimikyu GX
Gengar & Mimikyu GX
$2186.88
Pikachu
Pikachu
$248.24
Gengar
Gengar
$226.12
Pikachu
Pikachu
$199.99
Blaziken
Blaziken
$185.00
Magikarp δ
Magikarp δ
$184.23

MORE FROM AQUAPOLIS

FULL SET →
Nidoking (150)
Nidoking (150)
$500.00
Kingdra (148)
Kingdra (148)
$489.00
Slowpoke
Slowpoke
$449.99
Ampharos (H1)
Ampharos (H1)
$350.00
Zapdos (H32)
Zapdos (H32)
$349.99
Steelix (H23)
Steelix (H23)
$339.95

PRICE FAQ

What would a card shop pay for Undersea Ruins?

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Shops and show vendors commonly offer about 70% of market in cash and 80% in store credit. At today's $6.57 market price that is roughly $4.60 cash or $5.26 trade for a near-mint copy. Selling it yourself on TCGplayer or eBay nets more after fees; see the seller-net answer below.

What is Undersea Ruins (Aquapolis) worth today?

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Undersea Ruins [Normal] has a TCGplayer market price of $6.57 as of 2026-10-29.

Is Undersea Ruins going up or down in price?

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Undersea Ruins #138/147 is trending up: $6.57 today, up 7% in 30 days and at its highest since we began tracking (2024-02-08), set 2026-10-22, and 2.0x its low of $3.26 (2024-06-02). TCGplayer market price as of 2026-10-29, tracked daily since 2024-02-08. Other windows: up 0.0% over 7 days, up 21.7% over 90 days, up 81.5% over a year.

What is the highest price for Undersea Ruins since TickerMint began tracking?

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TickerMint began tracking Pokemon prices on 2024-02-08, after Undersea Ruins came out, so these are the highest and lowest prices since we began tracking (2024-02-08), not all-time records. In TickerMint's daily data (since February 2024), the TCGplayer market price for Undersea Ruins [Normal] (all conditions) peaked at $6.57 (2026-10-22) and bottomed at $3.26 (2024-06-02).

how these numbers are computed →

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