Our first batch of online sales (available through eBay) sold out as of yesterday! This is a good thing, as it really helped us gauge how well this will do. I'm planning on putting a few more up for sale but, as it gets closer to January 1, they may not go as quickly. I'll announce it here when they are up for sale again.
Also, Bowker hasn't officially registered the ISBN yet. Hopefully that will be done tomorrow. Once it is, I think it will be an option to also sell on Amazon.com. Here's hoping, anyway.