Being a team leader can be a lot of work, so group-buying websites have sprung up, serving as agents between buyers and sellers and receiving a commission from the sale.
文中的group-buying就是指“团购”,名词形式为group buying,即为一个团队向商家采购,国际通称B2T(Business To Team),是继B2B(Business to Business),B2C(Business to Consumer),C2C(Consumer to Consumer)后的又一种e-commerce(电子商务模式),最核心的优势体现在商品价格更为优惠,也称为group buys。