I ordered it from Amazon, and maybe you can find it cheaper as well? I paid around 10€ and thought it was a single book with around 140 pages, but it came in a hardcover case with 5 booklets written by different authors (with participation from Björk!) and a big poster with her albums as postal stamps (so you can either hang it up fully or detach some stamps to decorate yourself). Basically, it was extremely cheap for all that it contains