I love these little boxes. Fortunately, we have a free library at our community center. 6 of us take care of it. People donate books in a basket and just take as many as they want and bring them back when done. Every couple of months we have to take the extras to the public library where they are sold to help support that library.
That's a fantastic idea to bring the books as close as possible to the houses rather than have people going to libraries which may be far away from home.
Ian