Maybe Japanese are nation that read many books I think, not only books but also comics and magines though.
This picture is a my book shelf and stocking books other rooms too, so I don't know how many books I have.
My father read many books too, perhaps is it heredity or almost Japanese so?
And Japanese books are probably reasonable, we can buy a hardcover for about 2000-3000 yen, paperbacks are selling about 300-1000yen besides many used books are 100yen.
I usualy read about 10 books in a month, but it cost less 10,000yen.
I like to read books very much.