I saw this listing on Raleigh Craigslist just now. I have no interest in this machine and don't really know if it is good or bad since I use a ResMed. Just passing the info along in case someone is interested.
http://raleigh.craigslist.org/hab/2130660277.html
Respironics BIPAP on Raleigh Craigslist
Respironics BIPAP on Raleigh Craigslist
ResMed S9 Autoset
ResMed AirFit F20 mask with headgear
ResMed AirFit F20 mask with headgear