Home Depot offers the Ryobi 40-volt Lithium-Ion Cordless String Trimmer, model no. RY40240, for $78.69 with free shipping. That's the lowest total price we could find by $16. It features a variable speed trigger, 11" to 13" adjustable cutting width, and an auto-feed string head. Deal ends December 4.
Note that this item is backordered and is expected to ship December 15.