I bought a welder from these guys. So far it seems to be an excellent machine for a very good price. dual voltage, multiple heat settings, stitch & spot welding features, nice clean welds w/o much spatter with the gas bottle. Around $900 US for the 160DV model. Seems to be very well made, a lot of great features for the money. Not some puny transformer with a small duty cycle. I've never bought a welder before but all the Lincoln, Horbart, Miller welder in the same price range didn't seem to compare at all & so far it's performed great. To get the same features in the above mentioned brands was pushing $2000 US.
It cost me $100 to ship across the US so to AU, $300 to $400 ???
Good luck, check out hyperlink.
Evan
http://www.htpweld.com/