From what I remember, db sells a Wyckoff/price action ebook for the princely sum of $30 (my recollection has to go back about 6 or 7 years so I may not be quite right on the amount). For this, he needs to post "documents" at your request, i.e. demand.
Why not read what he has made publicly available free of charge, i.e. at no cost to your or anyone, i.e. FREE, and then why not spend some time trying to understand his materials and examine for yourself whether or not the understanding of the market that db shares about the nature of price action and trader behaviors can be matched to what you yourself observe in the market.
To lump db in with all the snakeoil sellers feed on the dreams of day trading wannabes is beyond the pale. And to waste your time pounding the internet for documents for which you have no right nor claim to ask indicates how seriously you hope to become a profitable trade. To wit, not at all.
And this is why some of the best folks from whom struggling traders could, some years ago, have hoped to learn from in the past have disappeared from trading forums and what is left is largely a bunch of screeching, whining trolls, and little content of any value or interest.