I'm pretty sure I read somewhere it depends on content: niche-domain knowledge and test-preparing e-books sell ok at $10-$15 even if pirated more than often; se

I'm pretty sure I read somewhere it depends on content: niche-domain knowledge and test-preparing e-books sell ok at $10-$15 even if pirated more than often; self-empowering fluff and cuisine titles sell nicely below $10; mainstream novels, essays and general prose sell below $5. If I'm able to trace down the report, will add a link for your reference.