I bought a dynamo front wheel last summer from Longleaf Bicycles with a SP-PV8 hub, Velocity Dyad rim, DT Swiss Competition spokes (32), brass nipples and Velox rim tape for $259 plus $20 shipping. I also bought a B&M Luxos U headlight for $223 and B&M Toplight Plus taillight for $34. Altogether, the price tag came to $536. I could have gotten buy much cheap (less $119) with a more conventional headlight but chose the Luxos for its charging capability and brightness.

In retrospect, it was an expensive experiment. The dynamo system did not provide any better lighting than the Light & Motion Urban 800 that I had been using and cost me about $110. Moreover, I estimate that the dynamo hub slowed down my average speeds about 0.50-1.0 mph over the course of the winter. I removed the dynamo light system from my primary commuter bike a few weeks ago because the days are getting so much longer. I'm trying to decide now whether to switch it to my touring bike or resell it. I came to like the dynamo system for its convenience but did not find it to be cost effective, and I hate anything that slows down my commute times, which already take 2:00-2:20 hours each day round trip.