Hi guys, New to this forum, but sure arn't new to welding! recently I went to Princess Auto and bought a cheep oxy acetylene cutting/welding unit. I have been borrowing gas from a friend for a while but am going to set up an account with a gas suppier, anyone know the prices for 40 cubic feet of oxy and acetylene? Or does someone have a chart on how the gas prices go up as the size of the tanks increase? Any help appreciated.