Salvador Dali

He loved ripping money off of naive people.

An excerpt from the article 23 facts about Salvador Dali
The closest friend, confidant and muse of the artist Amanda Lear recalls that John Lennon's widow, Yoko Ono, wanted to buy a fragment of Dali's famous mustache. He, however, "thought that Yoko Ono was a witch and did not want her to possess any of his private items, and certainly a mustache." So he sent Lear to the garden to gather a dry, faded blade of grass. He packed it elegantly and sent to Yoko. Yoko Ono paid $ 10,000 for it.