I love the movie Wall Street, an Oliver Stone-directed tale of 1980s greed with Michael Douglas and Charlie Sheen.
In one scene, Bud Fox (Sheen), a young, cold-calling stockbroker looking to land the BIG account, visits the home of financier Gordon Gecko (Douglas). Gecko shows a painting to Fox, telling him how he bought it at an auction, after which others offered him an immediate profit if he would sell it to them. Same painting, multiple of the price only hours afterward.
The perception (of greater value and willingness to pay a higher price) is the reality (same painting).