Costco Picasso Controversy 3/17/06 6PM Joan Murray Costco was selling a crayon drawing at its Web site for a bargain $39,999.99. The buyer, Louis Knickerbocker, a meat distributor from Newport Beach, Calif., had never fancied himself a big-league collector. But as he was cruising to work in his sport utility vehicle one day, a radio news report about the Costco offering roused him to action. Mr. Knickerbocker, 39, quickly called his wife, Diana, on his cellphone and asked her to race to the Web site and charge the purchase to his American Express card. "They just sell the top quality - whatever you buy at Costco, whether it's a washing machine or a vacuum cleaner," he said in an interview. "I just thought, if it's a Picasso, you can't go wrong." "Worst-case scenario, we can always return it," he recalls telling his wife. Actually, the worst-case scenario may be that the drawing is not a Picasso - an assertion that has Costco...