That's a high mileage Jeep. It has over 15K per year average and a good percentage of JKs aren't driven even the standard 12K allowance due to fuel economy, noise, they are a weekend toy, etc. I would say keep looking unless it's exactly what you want and you get him below $11k.
As private sellers we always think our vehicles are worth more than they really are. Check your local listings. A sale by pp should be $1500-2000 less than dealer because they offer zero warranty, inspection, reputation, etc.