ok, $385. And there's a newer model. Mine is three years old (and I had two previous models before that—Steve doesn't do gas mowers.)

Black & Decker CM1936ZA 36V Lithium Ion Cordless Lawn Mower , 19" https://www.amazon.com/dp/B010UOB6OE/ref=cm_sw_r_cp_api_2ftoxb7YT18QY