I paid $2400 total for the rear locker only and the compressor mounted behind the front bumper. This was at Perry Hall Power Equipment, which is the installer recommended by ARB in my area (they send a list with the catalogue). This included braided steel air line instead of the blue plastic one that comes with the locker, the fabrication of the hardware needed to mount the compressor, mounting of the fuse in a logical place, a quick disconnect outlet for the pump up kit coming out of the front grille, and the pump up kit. They also did an excellent job of mounting the switches to the left of the steering wheel where the factory security light was. So drive in and drive out one stop.