I've had my keyboard on ebay for the last month now at a buy it now of £730. No takers so far. So, I've cut the price to £350 and put it on a 3 day auction.
Here's the URL:
At the time of this posting there is just under 2 days left.
I would also consider a direct sale. Save me having to pay the not inconsiderable Ebay fees (about 10% I think). If anybody is interested they can send offers to: email@example.com