Sorry, I led you astray. It seems the cost is $450.
http://www.tradetools.com/products/MIG180GG
It was a good unit with a smaller handset then my big unit so it made working overhead and in tighter places a lot easier.
I used it connected to my argoshield gas bottle though, not sure how it goes with gasless wire.
The other thing to keep in mind is that the older the machine (and less frequently used) it is more likely to have corrosion in the feed cable and handset.
I had not used my big one for over a year and it was running bad. Cost me $120 to get a new sleeve and handset put in (you can do it yourself and save a bit of course) then it went well again. You may be up for this cost with a 2nd hand unit.
The other thing I would recommend any welder to be is buy a new earth point. About $25 on ebay will get you a nice strong magnetet earthing block to use. Unless you are welding round tube it will make life easier on any surface. Then just keep the earth clamp in the tool box for those odd times it is needed.
