The college textbook bubble and how the "open educational resources" movement is going up against the textbook cartel

"Just like the ongoing home price increases and housing bubble of the last decade were unsustainable, there is now growing evidence that rising college textbook prices and the “college textbook bubble” are also unsustainable, especially because of the growing number of low-priced and even free alternatives to over-priced $200-300 college textbooks."