Gem-Knight Crystal (BLMM-EN100) from Battles of Legend: Monster Mayhem (YUGIOH) is available from 3 stores across 2 regions. Cheapest at $0.15 from tcgplayer (US). Prices last updated Jun 16, 2026.
yugioh
Gem-Knight Crystal
Battles of Legend: Monster Mayhem
- Collector #
- BLMM-EN100
- Rarity
- Ultra Rare
- Set
- BLMM
3 platforms1 condition
7d Change
No data
Lowest Price
$0.15
TCGPlayersave $4.06
Stores
3
Cardmarket, CardTrader, TCGPlayer
Price Range
$0.15 – $4.21
Prices
Not enough data for Buy Signal (needs 7+ days of price history).
Price History
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Profit Calculator
Buy Total (USD)
$5.21
Seller Fees
-$0.32
Net Profit
$-5.37
ROI
-103.0%
Break-even sell price: $6.14 on tcgplayer
