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  6. Mermaid Knight

Yu-Gi-Oh! · Ancient Sanctuary · #AST-025 · Common

Mermaid Knight

Yu-Gi-Oh! card price for Mermaid Knight: $1.43 market, from $0.50 at the cheapest listing, 1st Edition printing, updated Oct 18, 2026. Full price history since Feb 8, 2024 below.

Market price · 1st Edition · Oct 18, 2026
$1.43
−2.1% this week · −2.1% in 30 days
Buy on eBay →
1 day0.0%
7 days−2.1%
30 days−2.1%
90 days+40.2%
1 year+53.8%
All time+62.5%

Sellers right now

$0.50lowest listing$29.81highest
Market price$1.43
Mid listing$1.16
30-day avg$1.44

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$1.43

One year

$0.7652-week low$1.4652-week high
In the range96%
All-time low$0.64
All-time high$1.46
First priceFeb 8, 2024
1st Edition · market price
$0.59$0.91$1.22$1.54
$1.43
Feb 2024Dec 2024Nov 2025Oct 2026
TCGplayer market price · via tcgcsvtcgrate.com

Price story

We have tracked Mermaid Knight (1st Edition) since February 2024, when it sold for $0.88. Today the market price is $1.43, up 62.5%. Across the past year it went +53.8%, with a low of $0.76 and a high of $1.46; today it sits near the top of that range. This is the highest market price in our records for this card. The cheapest listing right now is $0.50, and the 30-day average market price is $1.44.

Printings

PrintingMarketLowHigh7d
1st Edition$1.43$0.50$29.81−2.1%
Unlimited$0.63$0.40$19.81+3.3%

The card in play

ATK1500
DEF700
Card type
Normal Monster
Attribute
WATER
Monster type
Aqua
Card text

As long as Umi remains face-up on the field, this card can attack twice during the same Battle Phase.

Other printings of Mermaid Knight

2 more · $0.49 – $8.83
All printings
Mermaid Knight (DR2-EN137), Dark Revelation Volume 2 — Yu-Gi-Oh! card price 0.0% 7d Mermaid Knight Dark Revelation Volume 2 · #DR2-EN137 $8.83 Mermaid Knight (SD4-EN011), Structure Deck: Fury from the Deep — Yu-Gi-Oh! card price 0.0% 7d Mermaid Knight Structure Deck: Fury from the Deep · #SD4-EN011 $0.49

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