Personally the "warranty" sounds like a money maker for who ever is selling it. We have a 2004 TJ that's been towed well over 120,000 miles and has another 60,000 on the odometer. In the 14 years we've had it I doubt we've had to put $1,000.00 into it for repairs. About the only repairs it's had are universal joints, a rear differential yoke, and a knob for the heater control. Everything else has been normal maintenance like brakes, tires, shocks, and fluid changes.
Of all the cars we've owned I believe it's been the least expensive to repair and maintain.