I have only built three frames but it has been a lot more exspensive than I thought, maybe I'm just a tightwad though. Torch + tanks, large assortment of files, workbench, wood layout table, various hand tools (tubing blocks, height measuring tools, calipers, etc.), tubes, dropouts, silver, lugs, brass, all add up, especially when you do it all at once. I bought everything over a couple of months and I spent a lot of money. I would say that it cost a minimum of 1200-1500 to build my first frame. I has been somewhat less exspensive for the 2nd and 3rd but still not cheap. I haven't started to building for anyone but myself but am saving up to possibly start a small local business next year, saving for the first insurance payment and also trying to save to have the money to buy parts and stuff for the future frames and buildups. I don't really believe in buying junk tools so that may make my cost a little higher but I don't buy top of the line either.