As the saying goes, one never stops learning. Another says: ten thousand books are less than ten thousand miles, ten thousand miles less than meeting countless people, meeting countless people less than a master's guidance. But remember — every master started with books. Reading is the cheapest way to knowledge: just time and effort.
Yet finding a personal master is unrealistic — offline coaching costs a fortune. So demand for books that boost knowledge and mindset keeps growing.
Ordinary books are everywhere, priced transparently on every platform, so marking them up hardly earns real profit.
Out-of-print books are different: they're unavailable on most platforms, so the markup room is huge. Better still, they carry built-in traffic — the platform rewards valuable content and keeps feeding you buyers. Sometimes it's not your carefully written copy that hooks them, but the book itself. Once a user finds your note via search, conversion odds jump.