Author is offering their work at a given price. That price is email. It may be worth it to you or not. Requesting a pirated copy of it without paying the price is not something I encourage,given so many of us here are well to do knowledge workers whose live being depends on people paying for our work.

(Not to mention, it's same or less work for you to create a temp email account, vs somebody else doing the work of signing up, sharing their email, and uploading and hosting content for your convenience). Yes yes information wants to be free and all that, but this is just lazy :-D