Sabco will sell you kegs setup for brewing. Last I saw a new keg, from the mfr, was going for a little under 200 but you had to buy a pallet of them.
Kettles are lighter, easier to clean and Imo just better suited for the job. You can beat the crap out of them and they will show less wear but who really uses their brewing gear as a double duty wheel barrel?
............Alright Brain, you don't like me, and I don't like you. But lets just do this, and I can get back to killing you with beer......~Homer