if some of the guesses are right I think it's a bargain .... a 1 year old 999R that cost £20,000 new and now selling for 11 to £12,000. Sounds cheap to me.
quite possible that some one (a friend) is trying to push the bidding up.
As for the sale being genuine I appreciate the seller has no feedback, but, looks as though he joined E-bay in Aug 2005 to sell his bike .... everyone has to start somewhere.
No more bids! ended at £10k. Pound to a penny if you were to email the bloke saying you had got home late and missed the end of auction the winning buyer would mysteriously back out of the purchase! And the bike would be open to offers.