Lenovo offers its Lenovo N3903A Wireless Mouse in Metal, model no. 57Y6596, for $39.99. Coupon code "USP1S36596" cuts it to $12.99. With free shipping, that's tied with our mention from two weeks ago and the lowest total price we could find by $27. Sales tax is added where applicable. This mouse features a 1,200 dpi resolution, USB transmitter, and more. Two AAA batteries are required, but not included. Coupon ends September 19.