Depends on your area. Here near Pittsburgh, 08's go for around $3000-3500. So in this area that would be a little high. If it's at a dealer that is common, if it's a private owner I would try to talk the seller down a little.
I have an '08 I bought in February with 189 miles on it for $3000 (private owner, he was asking $3500 and I offered $3000 and he took it). I have put a little over 3000 miles on it since then and so far so good with my pump.