Home Depot offers the Ryobi 21-inch 40V Self-Propelled Lawn Mower for $527.12 shipped. That’s down from the usual $599 price tag and the best offer we’ve tracked in 2019. Ryobi’s SMART TREK line features upgraded specs from its more entry-level line of mowers with a self-propelled design. Features a bulit-in light and automatically adapting speeds for the […]