Found this unit cheaper after purchase, but I'm not mad! I love this thing! Would be nice to add gas if I so choose, but I'm not knocking this welder at all. I've put over 20 rolls of 2# wire thru it and welded up to 3/4" steel (that requires some knowledge of welding and knowing what you're doing since penetrating 3/4" isn't gonna happen on a flat to flat project). I love this welder though and I would recommend for beginners or professionals alike.