Um, why make a book containing all other books?
Besides, much of the fun comes from locating each book separately, and buying or, well, relieving their owners of their possession.
Each book is unique, either totally different from others, or part of the series--which makes you want to collect them all. I'm just as happy with the current setup, though I think there is a site that contains the contents of all the books. If you'd like, I can see if I still have the address.