I suspect nobody has an accurate estimate of how many _used_ books are sold outside the major online resellers. All the small mortar (and online) used bookstores are likely invisible.
It does make you question our over-reliance on the digital format. What happens if/when access is controlled or restricted?
/Shrug/ I only buy physical books, and I read a lot of books.
Helpful response to Griffin's piece.
> Overall book sale stats apply to all books from throughout history that are still in publication. A bestseller from 1924 or 1824 might sell only 10 copies in calendar year 2024, but it might have reached 1 million in lifetime sales.
I don't really get this criticism. How are "overall sales" over a period of a century or two relevant to anyone in a business context or assessing the health of the industry?