The guy puts in a tremendous amount of work and research and releases some of it for free. If you want every edition then pay for it. Also he is an individual not some mega org.
If you don't have solution, don't waste your time here.
You were given the right answer. The guy's trying to make a living - if you enjoy his content, help him continue to create it.
This is not the place to ask how to pirate paid content. Your best shot is probably to contact the person and ask if they have an offer for people who can't afford the full price.