I guess it depends on what kind of book you want. There is a few different ones.
There is the Novel, which is the original story. You can get there here:
link
Or, you can get the Directors Cut book, forworded by Tim Burton. Which is all the behind the scenes things thats pretty interesting. You can get that here:
link
Hope I helped, I'm sure you could always find the same version of those books in a different currency anywhere on the web :) ♥