Is the VALUE of art all in the name of the artist who made it? Do art collectors buy what they like or what is worth a lot of money to someone else?

Famous British Street Artist Banksy (who has managed to keep his identity a secret despite his fame) pulled off the ultimate prank on tourists and art collectors today. The artist set up a booth of original artwork (each valued in the $1,000's) near New York City's Central Park that was designed to look like the many knock-off booths found throughout the city. Despite the true value of the work, the booth and the old man working it (NOT Banksy) only managed to sell a few paintings. While this is not an endorsement to buy every cheap knock-off you see, remember that things are not always as they appear!