Home Depot offers the Black & Decker 19" 36-volt Cordless Electric Mower, model no. CM1936, for $279 with free shipping. (Amazon charges the same.) That's $51 under our mention from a week ago and the lowest total price we've seen in a year. (It's a current price low by $35.) Features include a removable battery, 7" front wheels, 9" rear wheels, mulch plate, and 1.5" to 3.5" cutting height range.