I agree with everyone else, mostly. Being a gelding, the bloodlines won't really matter except to give you an idea of "where he comes from". He looks very solid to me, and his color is gorgeous.
I'd look at his temperament and make a decision on that. Does he fit what you are looking for personality wise? Do you think he'd be a good match for YOUR personality?
I can't speak toward prices anywhere else, but a trail horse here that needs a refresher would probably go for about $800-1000 with wiggle room. I'd negotiate based on how much time you feel it would take to get him to the point you want him. =)