You've got a lot of leeway if you don't have to pay shipping... I'd start with $40 and be happy if I brought it in for under $75. That's if it is functional, holds pressure, etc... oh yeah... you're still looking for a boil kettle... Nevermind. It doesn't need to hold pressure, just be free of holes.
Plus, if you're making a BK, that'll give you an extra valve stem, so you can have one cut, and one un-cut.
Plus, if you're making a BK, that'll give you an extra valve stem, so you can have one cut, and one un-cut.