This deal has ended.
Through 6/18, Buy.com has the Logitech V320 Wireless Notebook Mouse for only $10 after a $15 mail-in rebate. Plus, shipping is free and there is no sales tax (except CA, MA, MD, TN). New Google Checkout users can get a $10 off discount for signing up (if you do, they'll actually send it to you free of charge after rebate). This compact mouse features three buttons, optical tracking, and comes with a three-year warranty.