EXCERPT: After going upstairs and looking around the store, Obama was seen holding five or six books, including "Brave New World" and "The Bayou Trilogy." He went to the cashier after Malia and Sasha had picked out some books of their own, but disagreed with the $32 price he was quoted, which seemed low for the size of his stack. He paid by credit card, telling the cashiers that he uses it only about three times a year. (...)