How to Buy the "Plans & Blueprints for KNF Chicken Pens"

Hi, everybody, but especially Drake!

@Drake, when I got to https://naturalfarminghawaii.net/chickens/, it says that there is such a thing, but I can’t find a link to buy it.

Another link to “KNF Animal System Explained” for $8.00 (https://naturalfarminghawaii.net/product/advanced-animal-systems-the-secrets-of-pureknf/) says “Out of stock”. But, isn’t it a PDF? How does a PDF go out of stock?

Can you help me get some of these titles?

Thank you!

Eric