the practice of giving the same product a different price in different markets, in order to make the best profit 多重定价（在不同市场给予同一商品不同定价）
the practice of charging less for two or more units of an item bought together than the price of the units separately, in order to encourage people to buy more 多重定价（同时购买多件商品比分别购买单件商品便宜的定价法）➡BOGOF