We've established that the economic market for textbook is fundamentally broken. But even without that point, there are still many excellent reasons to switch over to a free textbook. First and foremost, using an expensive resource disconnects students. The Expensive Textbook Model is presented below:
The problems that teachers encounter when using expensive textbooks can almost entirely be mitigated by using free resources. Students get immediate and perpetual access to the course textbook, including later editions. Free textbooks also encourage students to focus on learning, not whether they can afford to purchase the textbook.
While this isn't a novel finding, we encourage you to test it out! Print out this survey for your students.