I like the suggested price point of under 50$. Perhaps I'd go even lower and require < $40. This is enough money to keep self-published authors motivated to mai

I like the suggested price point of under 50$. Perhaps I'd go even lower and require < $40. This is enough money to keep self-published authors motivated to maintain their books and write new ones, and also affordable enough for most students. This is the approach I've been following with my MATH&PHYS and LA books, and I will continue to use with future titles. I guess the ideal case for students would be OER, but then when everybody owns the book nobody is particularly invested in maintaining it and improving it...