A promotional offer in which a customer can purchase three items for the price of two, typically seen in retail stores or online shopping. This deal allows for the purchase of three items while only paying for two, resulting in a discount or savings for the consumer. It is often used as a marketing strategy to entice customers to buy more products or to clear out excess inventory. This phrase can also be used in a figurative sense, meaning to get more than what was expected or to receive an unexpected bonus.