Walmart offers the Logitech M310 Cordless Optical Mouse in Silver, model no. 910-001675, for $9.99. Opt for in-store pickup to dodge the $4.97 shipping fee. That's $4 under our August mention and the lowest total price we've seen for this mouse. (It's a current low by $7.) This 2.4GHz wireless mouse features a nano receiver and 12-month battery life.