The manipulative nature of promotions is so well established in retail that the industry even named one of the principles. They call it breakage. Breakage measures the percentage of customers who fail to take advantage of a promotion and end up paying full price for a product instead. This typically happens when buyers don’t bother performing the necessary steps to claim their rebates, a process purposely kept complicated or inconvenient to increase the likelihood of mistakes or inaction to keep that breakage number up.
