Who knew that the male brain is hot-wired to believe if a price tag is printed in red, it’s a bargain — even if that item’s not on sale and it’s just the regular price? I didn’t, but I don’t doubt the Oxford University study that found men most often believe that if the tag is printed in red they are saving twice as much as when the very same price tag is displayed in black and white.

That red tag thing isn’t the only game that retailers play to boost their profit margins. Every year, the retail industry spends gazillions of dollars to learn how our human minds work and then uses that information to trick us into spending more.