BestBuy: http://www.bestbuy.com/site/Logitech - M305 Wireless Optical Mouse - Silver/Black/9253372.p?id=1218069255546&skuId=9253372&st=m305&cp=1&lp=1
has the Logitech - M305 Wireless Optical Mouse - Silver/Black for $12.99
with free shipping or in store pick up. Not a bad price for a decent
wireless mouse.
They also have the other designs for of the M305 for $19.99