And a market research company called TNS found one third of consumers around the world said they used this tactic - or this type of shopping.

一家叫TNS的市场研究公司发现世界上有三分之一的人曾用过这种手段，或这种类型的购物。

Now, although people do it to try and save money, there are other reasons for this too, as we can hear from the Head of Technology at TNS UK, Amy Cashman.

现在，尽管人们这样购物的目的是尝试和省钱，但也有其他的原因，我们可以听一下TNS的技术总监艾米·卡什曼是怎么说的。