unless you are running a big turbo and a bunch of other gear then I reckon its a good price... 25K will get you into a lot of other cars at the moment...
but the standard question is what do you need a new car for (getting to work, only on the weekends, as a track car etc)? What do you plan on doing with it (keeping it standard, taking it to shows, modding it for max power, being individual etc)
if your car does all the things you need/want it to why change?
see how desperate this person is... ask for $30K and see what response you get