I paid $1000 for books my first semester of college back in 2007. I felt so burnt and violated I never bought another textbook. I made it through the rest of undergrad, a masters, and a PhD in biochemistry by checking out books from the library, borrowing textbooks from friends, and going sailing. When I taught I made it a point to teach my students about all the ways they can avoid becoming a victim like myself.
I really hope we get the last few expanse books as a movie trilogy with the TV series actors in like 5 years so the actors can age appropriately for the time gap accounting for anti aging meds. Maybe ignore TV series actual ending and recast certain actors so we can get some of the best parts of the last few books.