Lenovo offers its Lenovo N60 Wireless Mouse in Gray, model no. 0B71264, for $19.99. Coupon code "USP1MA431264" cuts it to $8.99. With free shipping, that's tied with our December mention as the lowest total price we could find, this time by $11. Sales tax is added where applicable. This 3-button mouse features a 1,000 dpi resolution, 33-foot range, and more.