I love that economics professors are starting to speak up on the issue I've always harped on, though it would be nice to see more in depth advice and suggestions to remedy the problem. I've highlighted a few things that students, professors, and universities can do here: "To Purchase, Rent, or Pirate? The Broken Economics of Textbooks in the Digital Age" http://boffosocko.com/2015/08/24/to-purchase-rent-or-pirate-the-broken-economics-of-textbooks-in-the-digital-age/