I have a Powertap Elite++ 10sp that I was thinking about selling. I am getting more into running and just riding my bike for fun. DT Swiss RR585 rim. I can send the disc cover as well if you are interested (would need the little tabs to connect it though). I was thinking about doing $350 on Craigslist but I'd do it for $300+shipping from Denver to avoid the Craigslist crowd. I'd need to keep the skewer though to put on my old wheel.
Edit: it has a new battery as of last summer and I'd include the tool as well.