StackSocial continues to offer downloads of The Mac Productivity Bundle 4.0 for Mac for $49.99. That's $640 off and tied with our mention from a week ago as the lowest price we could find for this bundle. It includes nine "productivity resources", including Camtasia, Toolbox for Pages, TrainSimple Design Courses, Sketcher, TextSoap 7, and more. Deal ends May 11.