As one of its daily deals, Best Buy offers the Dynex Wireless Optical Mouse in Grey, model no. DX-NPWLMSE, for $4.99 with free shipping. That's $15 off list and the lowest total price we could find for this mouse, although we saw it in a different color for a buck less last week (since expired). Features include 1,250 dpi resolution, two buttons, and more. Deal ends today.