Topic summary
Price protection
Extracted from the Wikipedia article Price adjustment (retail).
Price adjustments, also called price protection, is a retail practice in which customers can obtain a partial refund of the purchase price of an item if they can show it on sale at a lower price within a fixed time frame. In such circumstances, retailers will do a “price adjustment,” refunding the difference between the price the customer paid and the price now available. For example, if a customer buys a TV for $300, and it drops in price by $100, they can go back to the retailer to ask for a price adjustment and get the difference returned to them.