seems like a good deal for 300DX

[metalfab]

http://cgi.ebay.com/ws/eBayISAPI.dll...MakeTrack=true

Wonder if it is too good to be true. I paid that for my Syncrowave 250DX (complete package) a few months ago and would love the frequency adjustment of the inverters.

What would be some things to look for to ensure the unit 'would last'?

I asked for arc time and cycles (can these be 're-set'?)