You don't actually know this unless you have run an A/B test. Pricing a book is like software, you might very well sell many more than twice as many copies at h

You don't actually know this unless you have run an A/B test. Pricing a book is like software, you might very well sell many more than twice as many copies at half the cost, off hobbyist sales. (background, I worked in the book business years ago). If you really want to know if you're doing it right, run a time limited test of different prices and see what happens. I doubt this is nearly as much a niche as you think.