I have one of the welders in question, I just bought it at a pawn shop just to get the large bottle that came with it. I put the welder and cart on Craigslist today, as I have others.
It is made in China, but I opened it up and it is not a bad little machine. It has a quick release on the wire pressure wheel so you don't have to reset the pressure every time you change the wire. It also has a solenoid valve for the gas instead of the cheesy valve in the gun like some other off-brand units.
It uses standard Tweco type consumables, so no problem there. You can even get contact tips at Home Depot or Lowes.
Also, the shipping to my HOUSE is only $35, even way down here where I live.
For reference, I am selling mine with the Northern Tools $120 heavy duty angled cart for $180.