Lenovo offers its Lenovo N3901A Wireless Mouse in Black, model no. 57Y6573, for $14.99 with free shipping. That's the lowest total price we could find by $9. (We listed it for $2 less 10 days ago, since expired.) Sales tax is added where applicable. This mouse features a 1,000 dpi resolution, 2.4GHz wireless technology, and more.