Dell Business has the new Logitech Anywhere Mouse MX on sale for $80 - 25% off with coupon code $58BM$9$8QD81H
[Exp 10/28] = $60
with free shipping. Features the new Logitech Darkfield Laser Tracking technology which claims to work on glass and uneven surfaces. Includes Logitech Unifying receiver, 2 AA batteries, and carrying pouch.