Today only, this Logitech Wireless Anywhere Mouse MX for PC and Mac falls from $51.02 to $33.99 with free super saver shipping at Amazon.com. This is the best price we could find by $14. This mouse features Darkfield Laser Tracking, which means it is precise and can work on most surfaces (even glass!). The reviews have been positive, averaging a 4.5-star rating after 636 reviews. There is no sales tax (except in KS, KY, ND, NY, and WA).