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  6. Sea Monster of Theseus

Yu-Gi-Oh! · 2017 Mega-Tins Mega Pack · #MP17-EN231 · Secret Rare

Sea Monster of Theseus

Yu-Gi-Oh! card price for Sea Monster of Theseus: $2.74 market, from $0.85 at the cheapest listing, 1st Edition printing, updated Oct 19, 2026. Full price history since Feb 8, 2024 below.

Market price · 1st Edition · Oct 19, 2026
$2.74
−52.0% this week · −77.6% in 30 days
Buy on eBay →
1 day−29.6%
7 days−52.0%
30 days−77.6%
90 days−85.8%
1 year+109.2%
All time+18.1%

Sellers right now

$0.85lowest listing$95.94highest
Market price$2.74
Mid listing$5.50
Direct$1.94
30-day avg$7.38

Market price is what a near-mint copy actually sold for. The cheapest listing is what a seller asks today — on thin markets the two differ a lot.

Where to buy

TCGplayer$2.74

One year

$1.1152-week low$26.7152-week high
In the range6%
All-time low$0.50
All-time high$26.71
First priceFeb 8, 2024
1st Edition · market price
$1.62$8.82$16.02$23.21
$2.74
Jul 21Aug 20Sep 19Oct 19
TCGplayer market price · via tcgcsvtcgrate.com

Price story

Sea Monster of Theseus entered our records in February 2024 at $2.32 and stands at $2.74 today, up 18.1% over that time. Over the past twelve months it moved +109%, trading between $1.11 and $26.71. The current price is near the bottom of that range. Its all-time high in our data is $26.71, still 875% above the current price. The cheapest listing right now is $0.85, and the 30-day average market price is $7.38.

Printings

PrintingMarketLowHigh7d
1st Edition$2.74$0.85$95.94−52.0%

The card in play

ATK2200
DEF1800
Card type
Fusion/Tuner Monster
Attribute
WATER
Monster type
Zombie
Card text

2 Tuners

Other printings of Sea Monster of Theseus

2 more · $0.26 – $21.82
All printings
Sea Monster of Theseus (RATE-EN081), Raging Tempest — Yu-Gi-Oh! card price 0.0% 7d Sea Monster of Theseus Raging Tempest · #RATE-EN081 $21.82 Sea Monster of Theseus (MAMO-EN071), Magnificent Monsters — Yu-Gi-Oh! card price +4.0% 7d Sea Monster of Theseus Magnificent Monsters · #MAMO-EN071 $0.26

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Full set
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