Text-Book Rental Program – threat to publishers?

Cortez writes “With students spending on average of $900.00 on books, I can understand why the program is generating interest: stltoday.com Reports
” The situation is likely to get worse. The producer price index of college textbooks – the price at which publishers sell the books – has gone up 41.8 percent since 1998, says the Bureau of Labor Statistics. In that same time, the index for finished goods has gone up just 12.3 percent.””