This picture is worth one billion dollars.

“The price of a thing depends on a decision: it is an agreement between two or more parties.
 
Art is at the heart of the question of pricing. The artwork’s price varies according to some criteria that vary as well. The real price of art is a chimera.
 
Any attempt to define Art’s value by a price is irrelevant. Art does not have a price.”
 
Simon, creator of Numbers