yugioh dragon deck 2010 Yu-Gi-Oh! 5D's World Championship Reverse of Arcadia may be 1st or Unlimited Edition EPIC PULL! Yu-Gi-Oh! Dragon Knight

Albeit, that profit margin would be around $1 or so, though its still a profit at the end of the day

[edit] In the Yu-Gi-Oh

In addition to serious competitive players of the game, there are fans who are primarily interested in other branches of the Pokmon franchise, such as the video games or anime, but occasionally dip their toes into the card collecting pool, and there are also plenty of little kids who just like having cards with little pictures of cool and cute creatures on them

Since siege battles force an opponent to protect them, we can safely bet therell be battles that task their own caster with defending them