微博上看到一个话题「黑五折扣只有5%是真实的」，一堆媒体转来转去却没有一个给出原始来源链接，搜了一下，原来是我每天都在看的英国消费者组织 Which？做的调查，来源链接：https://press.which.co.uk/whichpressreleases/the-great-black-friday-swindle-just-one-in-20-deals-cheapest-on-black-friday-which-finds/