Gem-Knight Aquamarine (BLMM-EN137) from Battles of Legend: Monster Mayhem (YUGIOH) is available from 3 stores across 2 regions. Cheapest at $0.17 from cardtrader (EU) — 15% cheaper than US. Prices last updated Jun 16, 2026.
yugioh
Gem-Knight Aquamarine
Battles of Legend: Monster Mayhem
- Collector #
- BLMM-EN137
- Rarity
- Ultra Rare
- Set
- BLMM
3 platforms1 condition
7d Change
No data
Lowest Price
$0.17
CardTradersave $1.28
Stores
3
Cardmarket, CardTrader, TCGPlayer
Price Range
$0.17 – $1.45
Prices
Not enough data for Buy Signal (needs 7+ days of price history).
Price History
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Profit Calculator
Buy Total (USD)
$1.06
Seller Fees
-$0.32
Net Profit
$-1.18
ROI
-111.4%
Break-even sell price: $1.52 on tcgplayer
