But there are also those who come from places where monthly wage is like $200, so they wouldn't be able to afford a $30 book even if they wanted to
You could get a book from your local library (in some places, even digitally) - the author ends up getting peanuts for it anyway.
But there are also those who come from places where monthly wage is like $200, so they wouldn't be able to afford a $30 book even if they wanted to