You might check with tractor supply. They used to have a package deal with gas, auto darkening helment, cart and a couple of spools of wire. When I bought mine it was a hobart 175 but I think it is a 180 now. This was a couple of years ago but I think it was around 650 for the whole package. I found this to be the perfect unit for me because it will do thin panels as well as 1/4" steel with out straining on either end. One disadvantage was the gas bottle it is to small to do any real welding but I used it up then was able to retun for a credit and upgrade to a larger cylinder. However you have to have a 250v 50A receptacle for it. If you go with one of the HD model check on the prices for a regulator, and bottle for argon. Also the larger units are able to run the 10lb spools of wire which will save money in the long run.
