I would suggest that the demand has only become high because of the great reviews the music is getting, only people weren't willing to pay for the extra packaging up front for 2 reasons:
The music was completely unheard
It wasn't clear what the book would be
Now that these things are clear, people all of the sudden want it. Sometimes people just have to have a little faith. Yes, we will sometimes get burned by buying such an edition, but there are also times like these when the extra cash is definitely worth it.
All we had to do was trust our brother "Neil" as he promised us all that this effort was going to be well worth the investment.
Thanks Neil, I listened!