Price will vary and in my case few choices for install. I paid near $4200.00 for Roadmaster base plate, removable arms and cross bar, Sterling tow bar, Invisabrake, all wiring and setup. They did an outstanding job so far as I can tell. This was on a 2017 Jeep Grand Cherokee. A good installer would be my biggest concern.
2017 Sunseeker GTS 2800
2017 Jeep Grand Cherokee toad