Marketplace talk:Post Trade Requests/@comment-75.143.152.205-20120729024250/@comment-174.56.18.250-20120729030639

If asking will a fusion work, you can substitute 1 fusion for 1 brain, yes. But if price is 2 brains I'd take 1 brain & 1 fusion or 2 fusions. They're leveled up quite a bit, that's why they're more than 1 brain/each.