K evin Costello, owner of Siam Imports, had a bad experience recently receiving payment with cash. A customer came into his store and paid with a fake $100 bill, but it turned out that the bill was ...

Think the art market is dead? Think again! Andy Warhol’s silk-screen painting 200 One Dollar Bills sold for $43.8 million at Sotheby’s today, more than four times its estimated selling price.