I simple love my C330 Pro F. I have the 55/80/135 lenses, but primarily use the 55mm. Unbelieveable high acutance on these optics. My for some reason has stopped auto advancing the shutter making it a two step process, but it isn't too inconveninent.
I currently live in TEDA near Tianjin which is about 40 min. by bullet train from Beijing. In Beijing I visited Wukesong - big (but unimpressive) camera market place. I think they go for around 2000 RMB. But condition and extras are really the determining factor here.