Nothing But Software offers the Targus Wireless Optical Rechargeable Notebook Mouse, model no. AMW15US, for $10.99 with free shipping. That's the lowest total price we could find by $2. This 4.4-oz. mouse features a scroll/tilt wheel, up to 1,600 dpi movement resolution, and a USB receiver. It comes with two AA batteries and a charge cable that functions even when the mouse is in use.