Price seems pretty reasonable to me, don't know mileage but if under 10,000 and starts fairly easy (kick start only) I'd be all over it, I'd trade my 04 KDX200 with for it even up in a second. Hmm, wonder if he'd want a KDX instead.
Edit: did little more searching for $13-1500 more just a few year old KLR650's can be bought.
http://waterloo.craigslist.org/mcy/3192567290.html
Another 250, newer and only 2250 miles, but $1000 more,
2 650's in Des Moines area for 2800 under 5,000 miles.
http://quadcities.craigslist.org/mcy/3257261163.html
I like that one best, be perfect if it had the dual star centerstand.