Sounds about right. Low miles could imply that it was more of a weekend toy though, make sure you crawl under and look for bent control arm mounts and damage to the skid plates. Take it for a good 10 mile or so test drive to heat up the oil, and look at the rear main seal. It will probably have a new drop of oil forming on it, assuming the dealer wiped the old one off before the test drive. It's not a big deal, but opens the door for some more haggling.
A bad batch of CPS or oil sending units moved through in 2005, i can't remember exactly what it was, but bad news if the gear failed. Maybe talk the dealer into changing that instead of working at the base price so much.