As one of its daily deals, Best Buy offers the Logitech Wireless Performance Mouse MX, model no. 910-001105, for $47.99 with free shipping. That's the lowest total price we could find by $6, although we saw it for $3 less last winter. It features four thumb buttons, scroll wheel, and Logitech unifying receiver dongle that allows the addition of a compatible wireless keyboard without multiple USB receivers. Deal ends today.