Over 100USD is a normal price.
Consider any reasonably new good book on optics, software or game programming, or other technical subjects, even just photography as a subject itself in many cases are over $100 USD for publisher-backed books from Amazon even, and this is with competing products/books/information as well.
Given print on demand, people would be able to order a b&w or colour book to their preference without printed copies having to sit around before demand. It also allows constant availability. I'm not so sure a downloadable version would be a great idea, but that's another argument altogether.
At a print cost of $64 (colour), I think a sale price of ~$130 would be very reasonable taking things into consideration, and consider what you're actually getting for your money. Information that you wouldn't be able to derive yourself without dedicating 10+ years to the subject, along with tens of thousands of dollars to do so or more, but you get this in such a short time frame, for very little cost.
This isn't a run-of-the-mill $40-$50 book.
Consider any reasonably new good book on optics, software or game programming, or other technical subjects, even just photography as a subject itself in many cases are over $100 USD for publisher-backed books from Amazon even, and this is with competing products/books/information as well.
Given print on demand, people would be able to order a b&w or colour book to their preference without printed copies having to sit around before demand. It also allows constant availability. I'm not so sure a downloadable version would be a great idea, but that's another argument altogether.
At a print cost of $64 (colour), I think a sale price of ~$130 would be very reasonable taking things into consideration, and consider what you're actually getting for your money. Information that you wouldn't be able to derive yourself without dedicating 10+ years to the subject, along with tens of thousands of dollars to do so or more, but you get this in such a short time frame, for very little cost.
This isn't a run-of-the-mill $40-$50 book.



