This deal has ended.
Buy.com has the Logitech VX Revolution Cordless Laser Mouse for only $49.99 after a $20 mail-in rebate (good through 12/16). 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 (you can't get both). This mouse features seven buttons, laser tracking, and comes with a three-year warranty.