How can you sell an ibook for free without an isbn?
So here's my issue:
I want to eventually sell iBooks that I create using iBooks author. However, until I get the hang of it, I would like to publish a few for free. I signed up to be an offical iBooks author through iTunes, and was granted the permissions to get into iTunes Connect. It asked me if I wanted to make books for free, or if I wanted to make books to sell for a price. It also said that you should pick the latter should I want to sell a few for free to start and then move up to selling for a price. I also read that you do not need to purchase an ISBN for books you plan on selling for free.
I then spent several months working on my first iBook and I'm ready to publish to the store. I'm then required to download iTunes producer. Once that's installed, it says I need a ISBN even if I'm offering the book for free.
What gives?