There are currently 4 ex demo 905e fully refurbished bikes on ebay,for sale by wisper with full guarantee with a buy it now price of £600 and a reserve of £500(item number 250226263966),so you may be aiming a bit high with your price.
i think you may be right !! however they have to win the auction and the previous ones on ebay sold for over 600 with postage but having said that i am open to offers !