Walmart had been running a deal, where it promised to match any price found online.
However some customers worked out that the only thing they needed to show Walmart was an Amazon advert.
All they did was register an account which created an official looking Amazon page with a bogus advert on it.
Few Walmart employees appear to have verified the legitimacy of these online deals and many customers were able to buy PS4 gaming systems for $90.
Walmart should have known better. Consumerist found that Sears accidentally listed several Nintendo consoles on its site for $60. Members of Twitter and Reddit communities posted pictures of receipts documenting that Wal-Mart had accepted these fake Amazon listings.