Book writing: looking to purchase a book you have already written

I am testing the process to add a book to various ebook marketplaces. I am looking for content already written to test this with, although I will put a pseudonym on as author.

I do not need a high quality work. Anything over 100 pages that can be fiction or non-fiction, makes general sense and is free of errors.

It can be a research paper, collection of stories, etc. I just need it within 1-2 days to begin my testing and research.