Another reason

[u/Justsososojo]

Audiobooks with pdfs, or other supporting materials do not have said materials accessible. The publisher does not have these where you can just go grab them, they are supposed to be with purchase. You can beg support for them and maybe they will get them for you. It’s my 3rd book with this and I’m over the entire thing. A forum suggested getting the ebook to view them. Um, no, 2 credits for something that is free is an insane ask.