For sale is a set of like new Rotor Q-Rings. 50-36 and 110 BCD for compact cranks. $150 shipped. These are $220 new.
Also, if anyone is interested, I have a set of wheels that are like new. DT Swiss 240 hubs, laced 32 hole with DT Swiss spokes to IRD Cadence rims. Campy compatible. These are around $700 new. Open to offers.