This Ryobi One+ 18-Volt Lithium-Ion Electric Cordless String Trimmer and Edger falls from $79.97 to a price low of $49.88 this weekend at HomeDepot.com. Plus, shipping is free. This lightweight trimmer features a 10" cut width and the shaft rotates for easy edging. It recharges in just one hour. Sales tax is charged in most states.