Dell Home offers its Dell WM123 Wireless Optical Mouse, model no. J6XG8, for $15.99. Coupon code "8L68JXBB08BH21" cuts it to $13.99. With free shipping, that's the lowest total price we could find by $6, although we saw it for $2 less in January. This wireless mouse uses AA batteries and boasts one year of battery life. Deal ends October 27.