Lenovo offers the Lenovo Bluetooth Laser Mouse, model no. N6901A, for $39.99. Coupon code "USP1O16482" cuts it to $15. With free shipping, that's the lowest total price we could find by $14, although we saw it for a buck less in July. Sales tax is added where applicable. Features include 1,000-dpi laser tracking, scroll wheel, and more. It requires two AA batteries. Coupon expires October 10.