Another day, another deal this time on a mouse that rarely gets marked down. The Roccat Kone Pure Ultra is one of the top ergo mice from Roccat and one of the lightest in their roster at only 66grams. It usually retails for $69.99 but Amazon has marked it down to just $39.99 today which is a pretty huge steal by Roccat standards. Both white and black versions of the mouse are available. Get it now at Amazon.