The rule says that we should try to repay, in kind, what another person has provided us. - Robert B. Cialdini

such cases it is vital to remember that scarce things do not taste or feel or sound or ride or work any better because of their limited availability.

our typical reaction to scarcity hinders our ability to think.

By no means is my friend original in this last use of the “expensive = good” rule to snare those seeking a bargain. Culturist and author Leo Rosten gives the example of the Drubeck brothers, Sid and Harry, who owned a men’s tailor shop in Rosten’s neighborhood while he was growing up in the 1930s. Whenever the salesman, Sid, had a new customer trying on suits in front of the shop’s three-sided mirror, he would admit to a hearing problem, and, as they talked, he would repeatedly request that the man speak more loudly to him. Once the customer had found a suit he liked and had asked for the price, Sid would call to his brother, the head tailor, at the back of the room, “Harry, how much for this suit?” Looking up from his work — and greatly exaggerating the suit’s true price — Harry would call back, “For that beautiful all-wool suit, forty-two dollars.” Pretending not to have heard and cupping his hand to his ear, Sid would ask again. Once more Harry would reply, “Forty-two dollars.” At this point, Sid would turn to the customer and report, “He says twenty-two dollars.” Many a man would hurry to buy the suit and scramble out of the shop with his “expensive = good” bargain before Poor Sid discovered the “mistake.