Was I the only one who saw this for the genius it was. The author walked us through the pain, selling us the problem. How he would never sell us a book he just wrote without developing a rapport. Then over the next paragraphs he transitioned us into buyers:

"Once you’ve had a chance to learn a lot from my material, and you’ve had enough time to start to trust me, then I tell you about the book."

then

"To put it in web marketing terms, the conversion rate will be incredibly higher by asking for the sale after building trust."

Followed by how hard it is to do this:

"It’s actually really painful to setup."

Oh but wait! I have a software suite that does this for you: "With ConvertKit it is easy to set up a new landing page, upload a PDF or another file to offer as an incentive, then let the subscriber opt in to an email course."

And then the buy now link :).

Pure genius. Nice article.