Sea Monster of Theseus

Raging Tempest (2017), Yu-Gi-Oh!, RATE-EN081, Secret Rare


Sea Monster of Theseus
Printing1st Edition $6.98Unlimited $20.83

1st Edition, Near Mint

$6.98

TCGplayer market price (an average of recent sales)

As of Oct 26 (yesterday).

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Price trend

For the 1st Edition printing.

Oct 19 $7.48 → Oct 26, 2026 $6.98 −6.7%

$7.68$7.20$7.40$7.60$6.98
Oct 19, 2026Oct 21, 2026Oct 22, 2026Oct 23, 2026Oct 26, 2026

Sep 26 $9.76 → Oct 26, 2026 $6.98 −28.5%

$9.76$8.00$9.00$6.98
Sep 26, 2026Oct 6, 2026Oct 11, 2026Oct 16, 2026Oct 26, 2026

Jul 28 $22.42 → Oct 26, 2026 $6.98 −68.9%

$22.42$10.00$15.00$20.00$6.98
Jul 28, 2026Aug 27, 2026Sep 11, 2026Sep 26, 2026Oct 26, 2026

Oct 26, 2025 $2.44 → Oct 26, 2026 $6.98 +186%

$27.07$2.33$10.00$20.00$6.98
Oct 26, 2025Feb 24, 2026Apr 26, 2026Jun 26, 2026Oct 26, 2026

Feb 8, 2024 $2.81 → Oct 26, 2026 $6.98 +148%

$27.07$0.93$10.00$20.00$6.98
Feb 8, 2024Jan 3, 2025Jun 17, 2025Nov 29, 2025Oct 26, 2026

Vs its set

Over the 90 days to Oct 26, 2026: the 1st Edition printing −68.9%; the median other card in Raging Tempest 0.0% (99 other cards, each at its tracked printing). 87 of those 99 changed price, but no more than half rose and no more than half fell, so the middle change is 0%.

Market details

Record

Price history Feb 8, 2024 to Oct 26, 2026

Highest (1st Edition)$27.07Jun 18, 2026 only
Lowest (1st Edition)$0.93Jul 25, 2025 to Jul 27, 2025
Vs highest74% below $27.07

Price changes, last 30 days

DatePriceChange
Oct 12$9.11 → $9.05−0.7%Show on chart
Oct 14$9.05 → $8.25−8.8%Show on chart
Oct 17$8.25 → $7.87−4.6%Show on chart
Oct 18$7.87 → $7.48−5.0%Show on chart
Oct 21$7.48 → $7.68+2.7%Show on chart
Oct 26$7.68 → $6.98−9.1%Show on chart

Latest 6 of 7.

Same set: Raging Tempest (100)

Keep exploring

Live market

Newest TCGplayer value: Oct 26, 2026. Prices in USD. Card names and images © their respective publishers. See how these prices are made.