A sale at Home Depot, known as Ryobi Days, is offering discounts on power tools and outdoor equipment, with some outlets reporting savings of up to 71% off. Other retailers, including Lowe's and Walmart, are also holding sales on similar products, with discounts ranging from 40% to 70% off, in what appears to be an effort to rival Prime Day deals. The sales seem to be timed to coincide with the summer season and Father's Day.