Though doster1's experience is deplorable, I've bought the following from ubid:
Klipsch KSC-C1 - $79 + $20 S&H (New, No Reserve)
Acurus A100X3 - $449 + $38 S&H (New, No Reserve)
Acurus A100X3 - $389 + $38 S&H (New, No Reserve)
Their shipping charges are certainly high, and they take their sweet time in getting here (10 days±), but I've received 2 out of 3 of those in perfect working order as advertised. The other Acurus should be here tomorrow per FedEx tracking.
While I've been pretty pleased with my purchases so far, doster1's experience and other ones I've read about have given me good reason to look for bargains elsewhere. Sotheby's they're certainly not.