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Sea Monster of Theseus card prices and values
There are 4 Sea Monster of Theseus cards and versions in our Yu-Gi-Oh price list. The most valuable is Sea Monster of Theseus RATE-EN081 from Raging Tempest at about $19.87 ungraded, and the highest PSA 10 value is Sea Monster of Theseus from Raging Tempest at about $63.87. Prices updated November 9, 2026.
| Card | Raw | PSA 9 | PSA 10 |
|---|---|---|---|
 Sea Monster of Theseus RATE-EN081Raging Tempest · Unlimited | $19.87 | — | — |
| Sea Monster of Theseus RATE-EN081Raging Tempest · 1st Edition | $5.61 | $18.79 | $63.87 |
 Sea Monster of Theseus MP17-EN2312017 Mega-Tins Mega Pack · 1st Edition | $0.97 | — | — |
 Sea Monster of Theseus MAMO-EN071Magnificent Monsters · 1st Edition | $0.23 | $7.00 | $34.73 |
Sorted by ungraded price. Raw prices: TCGplayer market price. Graded values: PriceCharting. A dash means we do not show a graded value for that card. This is a guide, not financial advice.
Questions
Sea Monster of Theseus card questions
What is the most valuable Sea Monster of Theseus card?
Sea Monster of Theseus RATE-EN081 from Raging Tempest (Unlimited) at about $19.87 ungraded. The highest graded value is Sea Monster of Theseus from Raging Tempest at about $63.87 as a PSA 10.
How much is a Sea Monster of Theseus card worth?
It depends on the exact card and version. Sea Monster of Theseus cards in our list run from $0.23 to $19.87 ungraded. Find your card by its number in the table, then open it for the full prices.