Best Buy offers the Logitech M510 Cordless Optical Mouse in Light Silver (pictured), model no. 910-001822, or Blue, model no. 910-002533, for $17.99 with free shipping. That's $2 under last month's mention and the lowest total price we could find now by $12. Sales tax is added where applicable. This wireless mouse features a nano-receiver, ergonomic design, and more. Two AA batteries are included.