It definitely doesn't look short, but I think 18k is WAY over priced. I mean hell, you could find a jk for the same price.
There's a lot that could be wrong with this. 6" is way tall. I can't tell if there is a body lift or not, but 6" is way big. Sure, it's got staggeringly low miles, which is nice. I don't see why he's offering 2 sets of wheels and tires....and I can't figure out if that thing on the side is a step orrrr......Don't get me wrong, It's good looking on the outside.
I'd pass. $18,000 is way over priced imo, In Atlanta, Jeeps with 90k miles are listed for $6-9k. Jeep engines last an eternity if they're maintained.
Your jeep is out there, be patient