77 cents profit per copy sold? Is this normal for authors? I understand this book has high production costs, but that doesn't mean the author shouldn't get paid...
It is a sad well know fact that one cannot live alone from selling books, in technical domains they mostly serve as means to sell one's credentials in a specific domain, for conferences, freelancing, ....
The author stated somewhere he wasn’t out to make money on the books on Amazon or such, and if you sell via print on demand with Amazon it is really hard to get a price that works worldwide and doesn’t give you at least “some” profit somewhere.