There's a guy at my work who makes dune buggies. He has a hobart 140 that he's had for around 4 years now. He upgraded to a hobart 190 so he can do thicker welds and he wants to sell the 140. He says it still works and can give me a demo/show me how to use it. I think it comes with a regulator and the gun/tips etc. He wants $200 for it. Should I go have a look? Seems like a decent price for a used one, but I don't know how much life these 140's have in them? Are they like my syncrowave tig with 30+ year life spans or are they going to crap out after a few weeks in my hands?