你知道上当是什么感觉吗?你坐在飞机上,邻座的那位向你吹嘘他买的票比你的便宜一半。或者你穿着在折扣店买的新衬衫,而你的朋友却说她在百货店打折的时候找到一件一模一样的衬衫,而且比你的还便宜10美元。或者你在网上预订了不可退款的酒店房间,最终却发现根本不便宜。你也很可能体验过这种买卖关系的另一面——比方说以诱人的价格抢到了前往伦敦的往返票 Do you know what it feels like to be fooled? You’re sitting on a plane, and the man next to you brags you about half what he buys. Or you’re wearing a new shirt that you bought at a discount store, while your friend says she found an identical shirt at a discount at a department store and was $ 10 cheaper than yours. Or you booked a non-refundable hotel room online and found that it was not cheap at all. You’re also likely to have experienced the other side of the deal-for example, grabbed a return ticket to London at an attractive price