Wolperts Competitive Bidding Notes: The Art of Balancing You cannot view this unit as you're not logged in yet. To access this content, you must purchase Wolpert's Competitive Bidding: The Art of Balancing (July 17 2020).Post navigationPrevious post: Wolperts Competitive Bidding: The Art of Balancing – July 17, 2020 Video CourseNext post: Wolperts on Competitive Bidding: The Free Bid – July 24, 2020 Video Course