Newegg offers the refurbished Logitech M510 Cordless Optical Mouse, model no. 910-001822X, for $12.99 plus 99 cents for shipping. That's $10 under the lowest total price we could find for a new model today, although it was $2 less in May. This wireless mouse features a USB nano-receiver and ambidextrous, ergonomic design. Two AA batteries are required, but it's unclear if they are included. A 90-day warranty applies, but it's unclear who backs it.