Yep. Any course that I have control over, I try to switch to OERs to save students money. Unfortunately, it's a ton of investment to do that for our largest courses, where our TAs depend on the homework services that come integrated with the textbooks. And I don't have a clue how much that textbook costs, because it's embedded in their tuition. I just hate that they don't have access to it after the semester is over, which is why I casually mention not to use library genesis to acquire a PDF of the textbook for posterity's sake, because that violates copyright law.