Prime members only. Today only. Amazon has the Greenworks 2 x 24V (48V) 20" Brushless Self-Propelled Mower (MO48L4211-D) for $499 - 30% off automatically at checkout ("Extra Savings") - 25% off coupon ("Prime Savings") = $344 with free shipping. Includes (2) 5Ah USB batteries and dual port rapid charger with 24V brushless drill / driver.