Free: Contests & Raffles.
Cheapest I have is an old styrofoam float for a dock. Nice and big and arrows come out real nice, just don't shoot field points into it. Harder than hell to get out. I have a rhinehart and it is great as well as a new block . Rhinehart holds up pretty good, I don't shoot a ton of bh's into either but have enough to tear them up a bit. Rhinehart is doing better than anything else.