I've looked around on varius websites for kegging kits and such, and from what I can tell they generally are all pretty comparable price wise. About $300 for a 2 keg system set up with 2 through the fridge door faucets. Others talk about finding kegs and things on CL on the cheap, but I've never seen those deals. Just google homebrew kegging. You'll find all kinds of places that deal keg systems.