Meritline offers the HP 3-Button 2.4GHz Wireless Notebook Mouse, model no. LK006AA, for $12.99. Coupon code "MLCKS13HNL1" cuts it to $9.99. With free shipping, that's the lowest total price we could find by $5. This radio frequency optical mouse features 1,200 dpi resolution, three buttons, and a rubberized scroll wheel. Coupon ends after 200 redemptions.