Best Buy offers the Logitech M510 Wireless Optical Mouse in Silver, model no. 910-001822, or Deep Blue, model no. 910-002533, for $14.99 with free shipping. That's tied with last month's mention as the best price we've seen for this mouse. (It's a current low by $6.) This wireless mouse features a USB nano-receiver and ambidextrous, ergonomic design. Two AA batteries are included.