Lenovo offers its Lenovo N3901A Wireless Mouse in Black, model no. 57Y6573, for $29.99. Coupon code "USP1J36666" cuts it to $14.99. With free shipping, that's the lowest total price we could find by $12. Sales tax is added where applicable. This mouse features a 1,000 dpi resolution, 2.4GHz wireless technology, and more.