Trend·HQEST. MMXXIV

LOT N° yugioh-96334243-MP17-EN231

Sea Monster of Theseus

Save this printing to your collection to find it again.

Secret RareYUGIOH · MP17

Sea Monster of Theseus

2017 Mega-Tin Mega Pack · Card MP17-EN231

Raw Card Price · USD
$2.40
79.8%30d
TCGplayer · USD Market · Normal · First Edition · Condition unspecified
Current within source freshness windowSource updated Oct 21, 2026, 8:05 PM UTC
EUR reference€8.22Cardmarket · EUR Price type unavailable · Normal · Condition unspecified · Source timestamp unavailable · Last known value — not a current selection
Observed Low$2.40
Observed High$12.88
Observed Avg$8.16

Statistics use available observations from the past year. A 30-day change requires a dated baseline. Prices refer to the stated variant; condition-specific valuation is unavailable when condition is unspecified.

How to read these prices

USD: Fresh source quote

The source timestamp is within 36 hours. This does not verify the price against an individual completed sale.

Condition is unspecified. This quote cannot value a worn or graded copy precisely.

The 30-day change compares observations with matching stored price dimensions. It does not measure sales volume or explain why buyers changed their prices.

EUR: Limited price evidence

The source or its update time is unverified. Use this as a reference only.

Condition is unspecified. This quote cannot value a worn or graded copy precisely.

There is not enough recent, comparable history to explain a 30-day price change.

Sources, update schedules, and coverage limits

USD Price History

Comparable raw-card observationsN° 02
TCGplayer · USD Market · Normal · First Edition · Condition unspecified
Current within source freshness window · Source updated Oct 21, 2026, 8:05 PM UTC
Current$2.40Period High$12.88Period Low$2.40Change79.8%

40 observations · Sep 11, 2026 – Oct 21, 2026 (UTC)

$2.40$5.02$7.64$10.26$12.88
Sep 11, 2026Oct 21, 2026

EUR Price History

Comparable raw-card observationsN° 02
Cardmarket · EUR Price type unavailable · Normal · Condition unspecified
Last known value — not a current selection · Source timestamp unavailable
Current€8.22Period High€18.90Period Low€8.22

114 observations · Apr 26, 2026 – Aug 26, 2026 (UTC)

€8.22€10.89€13.56€16.23€18.90
Apr 26, 2026Aug 26, 2026

All Printings

3 printingsN° 03

Choose the set, collector number, language, and finish that match your card. Missing details do not establish a variant match.

Set / VariantSet / No.PrintingRarity30dMarket
Raging TempestRATE #RATE-EN081en · normalSecret Rare3.8%$21.82
2017 Mega-Tin Mega PackMP17 #MP17-EN231en · normal · 1st EditionSecret Rare79.8%$2.40
Magnificent MonstersMAMO #MAMO-EN071en · normalUltra Rare11.5%$0.29

Marketplace Price References

1 stored source referencesN° 04

Raw card values

  • TCGplayer
    TCGplayer
    USD Market · Normal · Source updated Oct 21, 2026, 8:05 PM UTC
    Current within source freshness window
    $2.40 USDView source

Market Depth

computed October 22, 2026 at 8:33 PM UTCN° 05
Liquidity score13/100 · low
US vs EU spread—
30d volatility+6.8%
Low/market spread+67.1%

From the Same Set

Related cardsN° 04

Explore Yu-Gi-Oh! market context