Anecdotal, but I visited a second-hand SF bookstore in Stockholm a few months ago and I asked whether he had any CYOA books lying around. The store owner said t

Anecdotal, but I visited a second-hand SF bookstore in Stockholm a few months ago and I asked whether he had any CYOA books lying around. The store owner said that whenever he gets a new batch of books in, the CYOA books in that lot are all sold in less than a day.