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Gastrodon East Sea Secret Wonders #8 Pokémon card
Rare Holo

Gastrodon East Sea Secret Wonders #8

Card #8 · Illustrated by Kazuyuki Kano
100 HPWaterPokémonStage 1
Ungraded · blended
$12.39
27.5% · 30d
PSA 10
$159
13× raw
Range $7 → $13
2 grading companies tracked
Confidence medium · How we price →
Raw$12.39
PSA 912.0× raw$149
PSA 1012.8× raw$159
See live listings on TCGplayer →

Gastrodon East Sea is a Rare Holo Pokémon card from Secret Wonders (#8), illustrated by Kazuyuki Kano. It's a Stage 1 Water-type Pokémon with 100 HP, evolving from Shellos East Sea, weak to Grass +30. Its current blended market value is $12.39 ungraded, with a PSA 10 worth around $159 — a gem-mint grading premium of roughly 13× the raw value. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.

Prices last updated 2 July 2026.

Raw price by condition
Holofoil · live market via TCGplayer
NMNear Mint$12.39
LPLightly Played$7.35
MPModerately Played$5.49
HPHeavily Played$2.68
DMGDamaged$2.29
7-day 18.0%
30-day 27.5%
90-day 30.8%
All-time high$12
All-time low$9
Other printingsReverse Holofoil · $11.62

Price by variant

Holofoil$13
Reverse Holo$12

TCGplayer market price per printing — reverse holo, 1st edition and unlimited often differ sharply.

Graded prices
Ungraded (raw)$12.39
PSA graded price estimates by grade
GradeRelative valuePrice
PSA 10$159$159$159
PSA 92 sold$149$126$171
PSA 84 sold$35$30$41
PSA 62 sold$13$11$15
“Sold” = median of real recent eBay sold listings at that grade. Other figures are blended marketplace estimates. Confidence reflects the price spread — not PSA-official values.

Price history · raw near-mint

1 Aug 20231 Jul 2026
Current
$8.84
Period high
$10.51
Period low
$3.09
Change
97.3%

Recent sold prices

Last hammer price
$19
CGC 9 · 1 Jun 2026
Typical CGC 9
$19
Auction lots · last 90 days
1
Liquidity
Thin
0 in last 30 days

Real completed hammer prices from Fanatics Collect weekly and premier auctions, refreshed periodically. Grade read from the listing title.

Population across graders

PSA129 gradedPSA 10 · 7 · 5% gem rate
107
940
848
720
68
55
31
CGC178 gradedCGC 10 · 14 · 8% gem rate
1014
9.56
944
8.540
824
Real graded population from PSA, CGC & BGS — a lower gem rate means a Gastrodon East Sea 10 is harder to pull.

Should you grade it?

+$75
Raw $12.39 → graded PSA 10$159.17
after ~$71.58 grading fee → 12.8× the raw value
Target gradeEst. valueGrading feeNet vs rawMultiple
PSA 10$159.17$71.58+$7512.8×
PSA 9$148.68$71.48+$6512.0×
PSA 8$35.23$70.34$482.8×

⚖️ Risk-adjusted return

Best case isn't the whole story. Weighting every grade by how often it actually happens, across 129 PSA-graded copies:

Gem rate (est.)
5.4%
hit PSA 10
Expected return
$21
net, all grades
PSA 10 best case
+$75
Break-even
PSA 9+
Likely outcomeChanceValue
PSA 105.4%$159.00
PSA 931%$149.00
PSA ≤863.6%$12.00

Net = graded value − raw value − grading cost (tier fee + ~$20 round-trip shipping), using PSA fees as of 2026-06-28; the paused PSA Value tier is excluded so this isn't overstated. Gem rate is estimated from cumulative PSA population, which skews toward nicer, resubmitted copies — so it overstates the true grade rate. Treat it as a guide, not a guarantee.

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Where to buy

Available to buy nowLive on eBay
PSA 10 slabs — buy nowLive on eBay
Check recent sold prices

Cross-market prices

104% spread
PriceCharting · cheapest$7
TCGplayer · dearest$13

Currently 104% cheaper on PriceCharting than TCGplayer. These are independent market prices for the same card — a wide gap can mean a buying opportunity. Informational only, not arbitrage advice.

Market signal

Momentum · 30dRising +27%
Cross-marketMarkets disagree 104% gap

Derived from this card's 90-day price history, recent trend and cross-market price gap. Informational, not advice.

Card text

Evolves from Shellos East Sea.

Osmotic Pressure · Poké-Power
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-
Water · Colorless · Colorless
Does 80 damage minus 10 damage for each damage counter on Gastrodon East Sea.
Weakness Grass +30Resistance Lightning -20Retreat 4

It has a pliable body without any bones. If any part of its body is torn off, it grows right back.

About the Pokémon

Sea Slug PokémonGEN IVShellosGastrodon

It has a pliable body without any bones. If any part of its body is torn off, it grows right back.

Card details

Number#8
RarityRare Holo
SupertypePokémon
SubtypesStage 1
TypeWater
HP100
Evolves fromShellos East Sea
WeaknessGrass +30
ResistanceLightning -20
Retreat cost4
National Pokédex#423
Card IDdp3-8
SourceAggregated marketplaces

Other Gastrodon East Sea cards

There are 2 different Gastrodon East Sea printings — make sure you're valuing the right one. This is Secret Wonders #8 (Rare Holo).

More from Secret Wonders

Frequently asked questions

How much is Gastrodon East Sea (Secret Wonders #8) worth?

As of 2 July 2026, Gastrodon East Sea from Secret Wonders is worth approximately $12.39 ungraded (near-mint), and around $159 in PSA 10 gem mint. Values are blended from real Cardmarket, eBay sold and TCGplayer prices and update daily.

What is the PSA 10 price for Gastrodon East Sea?

A PSA 10 (gem mint) Gastrodon East Sea from Secret Wonders is worth around $159 — roughly 13× the raw ungraded value of $12.39.

Should I grade my Gastrodon East Sea?

A PSA 10 sells for about $159 versus $12.39 raw — roughly a 13× uplift. Grading is worth it when that premium comfortably beats the grading fee and the card is clean enough to have a real shot at a 10. See the "Should you grade it?" estimate above for net profit per grade.

Is Gastrodon East Sea rare?

Gastrodon East Sea is a Rare Holo card from Secret Wonders (card #8), illustrated by Kazuyuki Kano. Its current blended market value is $12.39 ungraded.