Best Buy offers the Dynex Wireless Optical Mouse in Gray (pictured), model no. DX-NPWLMSE, Purple, model no. DX-NPWLMSE-PR, or Blue, model no. DX-NPWLMSE-BL, for $7.99 with free shipping. That's $7 off and tied with our July mention as the lowest total price we've seen for this mouse. Sales tax is added where applicable. Features include 1,250 dpi resolution, two buttons, and more. One AA battery is included.