I just ordered one on clearance from Current magazine. I paid I think $2.19. I know it was $2.00 something. If you do not get a catalog in the mail, ask a friend. My daughter picked it out. We already have enough Disney ones.
Make your own autograph book. That is what we did and the characters love them. I used index cards that I bound. I put each characters picture on one page and the other was for signing. The just went crazy for these books.
I ordered all my paraphanalia off of the Gifts of a Lifetime website--autograph books, pens, lanyards, etc. It does cost a little more, but it's one more thing I have paid ahead of time and we don't have to worry about once we get there.