I just saw this on Slashdot:
Pearson Ditches Print Textbooks For College Students in Digital-First Strategy
They claim that switching focus from updating and printing paper textbooks to keeping digital products current will save them money and reduce the cost to students. They claim that their ebook prices range from about $40-$80 while paper editions can run $200-$300.
We are well into the 21st century, it is about time that textbooks finally catch up with the late 20th century.