It's Fine to stay on The Booklet side of the subject...
But just like with Most things in business these Days, as per your original post and video...
There needs to be some Marketing... Advertising... Connection in Relation with misc. Businesses who decide to Support it some ways...
It's Called A ''Monetization'' business model of some Sorts...
Both you and the Product Creator said it yourselves...
But No worries... As I also was Suggesting Free Giveaways are ''Absolutely'' Fine Too...
Of course...Never any Need to make Money if we Choose Not To...
Back on Subject now for those that Care to comment...
All the Best...
Phil