i would personly try and stay away from one of these but if your going to go for it then ask how long he has had, if he bought it from new, any nasty scratches and dents. I would say maybe £150 for it or £200at a push but i would try and stear away from it though, have alook on the for sale part on here and if you see something you like go on there profile and send them a email or add them on msn, thats what i did when looking for a bike. Hope i helped.
chris