Anyone ever tried one of these ? There's a small welding shop up here that made up about a half dozen of these last year but never managed to sell any. I talked to them and they're pretty desparate to sell some. I figure I could pick up one for around $6000CAD about $5200USD, pretty cheap considering it's construction. Only thing I'm not too sure about is the heat build up inside the tent in the summer, just like the old days with tents, openings only on the ends? Anyone else interested in one? Package deal. Thoughts? p.s. did a search!