Who am I to say anything.

It is just another opinion.

It is not about 9k for your knowledge in that book. Is 9k for taking you out. The faster they are able to grab data and process the less chance you have to make money from your work.

The money is irrelevant if we allow them to break the law. They even might pay you 9k for those books, but you might never get anything again because they would have made copyright useless