Yeah that's way too high. Trucks in that condition go for about 4500 around Alabama. Things that detract the price to me include the lift, which suggests its been ragged out, and the fact that the factory brushguard is gone (some people take them off) and the factory bumper (should be body color with foglights) is gone, and the lower valance is off a 2WD. That suggests to me that it has been wrecked, or at least hit something hard.
And with 147,000 if it hasn't had it already, you're getting close to having to put lower intake gaskets and likely spider injectors on it. Looking at close to another 500 dollars if you do it yourself or probably 750-1000 to get a shop to do it. With a lift, likely all the bushings and ball joints, tie rod ends, pitman, and idler are shot. Looking at probably another 800-1000 there.
Not trying to be a buzzkill, just speaking from experience. I bought a 2000 z71 that had a lift, with 92,000 for $9K about 5 years ago. Took the lift and such off and have had to throw a lot of money at it to get it back right. Didn't know really what I was doing when I bought it and have paid for it. It was an emotional must have for me because I loved this body style growing up, and had a lot of good times with friends in OBS tahoe/yukons and trucks.
