I mean, it wasn't my first experience with the university prioritizing profit over helping students, but it was definitely emblematic.
Most of us figured out that we could get along fine not having the textbook in the first couple of weeks of class. But ultimately, the university was out to actively sabotage the used textbook market. The only source of used books was online. So I never got to experience this community of used book students.
Something about paying the source for licensing and distribution was the reason given.
Except my political science prof. So I just dropped the course. Fuck him and his unironic bowtie.
At any rate it turns out the English printing is so rare not only can it not be found on Libgen - the few copies online are selling for hundreds of dollars (which I certainly would not have paid for it). So not only did I luck into a paper fortune (I suspect this is a rather illiquid market - plus I had to go through and fix a bunch of typos by hand, so much for the Soviet STEM educational complex) the kids _definitely_ couldn’t find this on the Internet.
Same as good class hand notes from students, that get (or used to get) photocopied and handed down through the years to new students...
As I interpreted their story, the professor had a habit of asking questions and then answering them himself, if nobody offered an answer. Students wrote down those answers in the margins of the book.
Over time, the book collected a lot of these notes from different students.