About $100. If you buy it from LT Rich that includes mounting plate for the wheel sensor and mounting plate for the unit at the dash. Easy install. ArTurf, most of my customers mow their own lawns and usually they have Bermuda mixed with the St Aug/Centipede. Its hard to get them to mow it at 3 inches like it needs to be when the Bermuda is cut lower. Many times this leaves many of those stolons exposed. We had a week straight that it got down to between 9 and 12 degrees with highs at 20-25. Not good on turf more used to southern climates...I'm writing customers notes to that effect. Right now its "wait and see" what's left.