Lenovo offers its Lenovo USB Optical Mouse in Black, model no. 0B46973, for $19.99. Coupon code "USP1M36973" cuts it to $9.99. With free shipping, that's the lowest total price we could find by $10. Sales tax is added where applicable. This wired mouse features a scroll wheel, USB connectivity, 1,000 dpi, and more. Coupon expires May 21.