Still, adjust these figures for inflation and you get a different story, says Robert Sahr, an associate professor of political science at Oregon State University who studies media coverage of complex matters such as budgeting and economic policies. He found that the cost of hardcover fiction in real dollars had actually gone down 2 percent, while poetry and drama and juvenile categories had risen only a few percentage points. Nonfiction hardcovers had decreased in real price by 27 percent.