Not sure if I'm hitting exactly what you are looking for, but these auction results might give some useful info:

http://www.purplewave.com/cgi-bin/mnlist.cgi?100518/6331

http://www.purplewave.com/cgi-bin/mnlist.cgi?090211/2390

We've auctioned many other welder model and make combinations over the years, and you are always welcome to search our past auction results for "welder" to get a broader set of info.  Just go to this page and fire away: http://www.purplewave.com/sold/

Jerrod

Purple Wave Auction