I don't know maybe 50-60 physical books. A couple of years ago I went to a book fair and found a publisher that sold novels and some famous books which were in English. Compared to their actual price they sold the books for very cheap prices [I guess they somehow published the books on their own without the permission of the foreign publishers. Here copyright is a joke.] I got about 25 books from them! I haven't read most of them though.