Has the price changed recently?
However, there are a lot of ebook options now for $50-100 per course. Books that can stop working, as crazy as the linked tweet thread acknowledges. Books that will not be available on my bookshelf if I want to keep them for reference in the future.
And there's still piracy. I expect the ebooks will make this more and not less popular; a lot of pirated textbooks were...allegedly....low-quality scans when I was in college.
Textbook prices correlate with federal loan amounts. Publishers probably take the same % of that loan limit to price their books, so ironically the tools designed to help make education affordable are being exploited to make education unaffordable.