Lenovo offers its Lenovo N70A Wireless Laser Mouse in Dark Gray, model no. 0B44660, for $39.99. Coupon code "USP1OT24660" cuts it to $13.99. With free shipping, that's the lowest total price we could find by $16, although it was $2 less in August. Sales tax is added where applicable. It features a 1,200dpi resolution, nano USB dongle, up to six months of battery life, and more. Deal ends October 15.