3 for 2意思

"3 for 2" is a promotional term often used in retail sales, particularly in the UK, to indicate that when you buy three items, you only pay for two. It's a way of offering a discount on the third item, making it free when you purchase in multiples of three. This type of promotion is designed to encourage customers to buy more by offering a perceived bargain. It's commonly seen in clothing stores, bookshops, and other retail outlets.