you gotta make sure they're for a blaster not any set will fit. I'm looking right now and it seems the to nicest sets and most reasonable are either the DG or Moose Heel Guard nerfs. They require you to reuse the heel cages but the are pretty good shapped and easy to install. I'm probbably gonna order my set friday. I'm going with the DG w/black webbing, your best bets to go local my guy hooks me up with deals left and right you just gotta become friends with your local parts place guys.
yeah I'd see if you can get a deal maybe at the shop. Just be like I'd rather give you the buisness instead of.... he'll probbably be able to come reasonably close to the price.