Lenovo offers its Lenovo N60 Wireless Mouse in Gray, model no. 0B71264, for $19.99. Coupon code "USP1F441264" cuts it to $7.99. With free shipping, that's tied with our October mention as the lowest total price we've seen. (It's a current price low by $4.) This 3-button mouse features a 1,000 dpi resolution and 33-foot range.