As one of its Prime Day deals, Amazon offers Prime members the Logitech M510 Wireless Laser Mouse in Silver, model no. 910-001822, for $20.99. At checkout it falls to $13.99. With free shipping, that's tied with our March mention as the best price we've seen, and it's a current low by $7. It features a USB nano-receiver and ergonomic, ambidextrous design. Two AA batteries are included. Deal ends today.