Secret Wonders · #8 · 2007
Market price: The going rate for an ungraded copy of this exact printing, from actual sales data — TCGplayer for USD, Cardmarket for EUR. Updated daily. · Holo: The artwork shines with a foil pattern. A separate printing from the plain card, and in vintage sets often worth many times more.
$14.91
up9% · 29dvia TCGplayer, updated Oct 8, 2026
Set rank: Where this card's market price ranks among the priced cards in its set — #1 is the set's most valuable card. in Secret Wonders
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Our chart tracks TCGplayer's market price and the asking prices of live eBay listings — what sellers want, not what buyers paid. Completed sale prices live on eBay itself: see recent sold listings for this card →
Right now Gastrodon East Sea trades at $14.91 for the Holofoil printing (TCGplayer market price).
That makes it the 16th most valuable of Secret Wonders's 132 priced cards. The set's top card is Gardevoir LV.X at $268. We've logged its price daily since Feb 8, 2024: $9.94 then, $14.91 now (up 50%). A year ago it sat around $9.98; today's $14.91 is 49.4% higher. Over the last 90 days it's up 12.7%, from $13.23. Since February 2024 it's run as high as $14.91 (September 2026) and as low as $9.06 (August 2025). Right now it's the priciest it's been since February 2024. Its 30-day range runs from $13.73 up to $14.91. The Holofoil printing is the headline number here; the Reverse Holofoil at $23.08 prices separately.
By Printing
By printing: Holo: The artwork shines with a foil pattern. A separate printing from the plain card, and in vintage sets often worth many times more. $14.91 · Reverse holo: Everything except the artwork is foil — the reverse of a normal holo. It's a separate printing and prices on its own. $23.08
TCGplayer prices each printing on its own — the Holofoil printing is the headline number on this page. Same card, same number — the print run or foil treatment is what changes.
Poké-Power Osmotic Pressure
Once during your turn (before your attack), if you have Gastrodon West Sea in play, you may move up to 3 damage counters from Gastrodon East Sea to 1 of your Gastrodon West Sea.
Dwindling Wave80-
Cost: Water, Colorless, Colorless
Does 80 damage minus 10 damage for each damage counter on Gastrodon East Sea.
“It has a pliable body without any bones. If any part of its body is torn off, it grows right back.”
About $14.91 for an ungraded copy. That's the TCGplayer market price for the Holofoil printing, updated Oct 8, 2026. Graded copies in great shape usually sell for more. What grading means →
Up about 13% over the last 3 months — from $13.23 to $14.91 (TCGplayer market price). Zoom out a whole year and it's up 49%. Prices move a little every day, so the chart on this page has the freshest line.
The highest market price we've logged is $14.91 — that was September 2026. We've been writing this card's price down since February 2024, so that's the record on our watch, not an all-time record.
eBay is the easiest place — this page links straight to the live listings for Gastrodon East Sea (Secret Wonders #8). Check the photos and the seller's rating first. That's the rule.
Cards trading near $14.91 today.
Secret Wonders
