I just bought a used one for $85 shipped to my door. It was in excellent condition and came in original box with original directions. The previous owner reassured me he "restored" the unit to clear his VIN. It worked right out of the box. I was able to set my tire size which are 33's and now my speedo matches my GPS speed. Like other people have said, make sure the previous owner does the restore so it won't be locked to their jeep