Amazon has the EGO Power+ 21" 56V Li-Ion Self-Propelled Cordless Lawn Mower w/ 2 Batteries (7.5Ah and 5.0Ah) & Charger (LM2135SP) on sale for $600 with free shipping. Also at Lowe's. Eight cutting height positions. 3-in-1 functions: mulching, bagging, side discharge.