nope, no joke... what do You consider "fair" payment to administer a written test and do checkout dives?
For an hour written test and two checkout dives... I would be thinking $200.
and of course there IS demand for such an option (albeit not a large one) unless you believe that I am completely and utterly unique (not) in my thinking.
I believe you are virtually unique.
And , actually skills Can be taught from books... we do it all the time... dont try an make OW harder than it is. And bouyancy skills? good try... yeah they dont teach that in OW basic either, thats why they have an actual class called "peak buoyancy"... (which I'll never take as I think buoyancy skills are learned by diving, diving, diving.)
I don't believe you can learn diving skills from a book. You can learn the theory, but practise (even 4 closed water sessions followed by 4 open water dives) is a minimum to have any form of mastery... and even with 8 directly supervised sessions I believe the vast majority of divers are not safe to dive on their own.
Do you think you can learn to drive from a book too? You can get the theory but the practise requires at least some practise.