The price update is not small. I understand and respect their effort, however I believe they have to find a better solution now.
Many of the files are not locked, which means the files can be shared after purchasing. It won't help to maintain people's willingness to pay but starting to look for free.
Maybe they could consider online subscription ? Like , if I have to purchase a set of camera repair course books that would be real costly in this new price, but if I subscripted then I can access not just the the course books, but also others at a lower cost.