通常我們都認為,在網上購物的價格相對于實體店要便宜一些.但是,近來美國的一項調查顯示,你用不同的設備購物有可能需要付的價格不一樣,比如說,用蘋果手機購物,那可能你要多付一些錢了.

CBS News: For years now, merchants have tracked individual online shopping habits to personalize their websites and attract customers. That also helps them make assumptions about income and spending power.

But a new study says some companies are going beyond that by using what they know about each shopper to set different prices for the same product.

You may have noticed while shopping online your computer seems to know exactly what you're looking for. That's because companies track your search and purchase histories to make guesses about what you like.

But a Northeastern University study shows companies are also using information about how you're shopping online to customize prices.

Asst. Prof. Christo Wilson explains."Many E-commerce sites will give deals or change the prices for people using specific devices or browsers, or will change the order of search results to highlight more expensive items."