A Pre-runner is a 2WD Tacoma (in this instance, probably) with a rear locker. 2WD=Bad. Locker=Good. 4WD with locker=Mmmm good!
If you're looking for a 4Runner in that price range, you're probably going to get a 2nd Generation model, or 1990-1995.
A Tacoma would be good as well as Juggalo mentioned, though I'm not sure how their prices compare, except for the fact they are less than 4Runners. So, I'm not sure which years would be applicable. They started in mid-'95, and yes, they've always been available with 4WD.