You get what you pay for, it's spendy buy WORTH IT for me. It's lunch box size is AMAZING. It welds aluminum like butter. I bought one after I was jerked around by local welders. I bought the machine, the spool gun, helmet, gloves, supplies AND I STILL spent less than I was quoted for the job. I did the job, customer loved it, I got paid, ended up with free equipment plus some cash out of the deal.
Mind you, I never welded a thing before in my life and I tackled 1/8" aluminum without a hitch. This thing runs off 110 or 220, so you can take it anywhere and plug it in and go. Like I said It's lunch box size makes it PERFECT to haul around.
For what I need this thing is perfect. Do a you tube search some guys are using this in their welding business as a field unit.
Once you get it the price you paid will disappear in the ease of use.