Marketplace talk:Post Trade Requests/@comment-5362454-20120817174945/@comment-5287181-20120817175459

Not much. What are you looking for? I could give you a Tiger Shark (worth 1 brain) or an Alligator (worth 1 brain).

Boosts can be traded for a brain, but are typically worth less. So at best you might get 1 card in a swap (or a few crappy R cards)