I bought last year. Never used it. I bought it from Colorado Cyclist thinking I would need it for training, it cost over $200 with shipping. Mounted a tire on it but it never saw pavement.
Here’s the specs: 700c, 32 black spokes, Ultegra Hub and skewer. $100 OBO plus shipping($25)
Ultegra, CXP-33 Black Rear 700c $197.00 
Clincher Wheel-Skewer Included
Hub: Shimano Ultegra FH-6700
Rim: Mavic CXP-33
Spokes: DT Swiss (options)
Nipples: DT Swiss (options)
Weight: 1135 grams (wt. of 32 hole w/14 gauge spokes, alloy nipples and skewer)
Every set of wheels we turn out is built completely by hand to your specifications using DT spokes. From lacing and tensioning, to stress-relieving, re-tensioning and final truing, we take great pride in building the finest wheels available. Please select the drilling, spoke gauge and the spoke nipple that you desire.
Our wheel builders recommend using 14/15 gauge double butted spokes and alloy nipples on this rear wheel. You’ll reduce the rolling weight by approximately 50 grams with virtually no reduction in strength.
PM if interested