Check out B&R Welder:
http://www.brwelder.com/indexTemplate.cfm

They have decent prices, free shipping to the 48 states, and are pretty decent to work with. The local places did not seem to want to be bothered with my business, so I went looking for alternatives.

First business I did with them was for under $25 worth of resistors for a Century wirefeed welder I was trying to fix for a friend. The guy at B&R shipped me the resistors promptly and talked me through the repair. That clinched the deal for me. Been doing business with them ever since and will probably order my Syncrowave from them when the time comes. Still have to get my shielding gas locally, though.