It looks like I lucked out then, maybe I picked up the last ones?
I don't have any Inside Information, but my suspicion is that they still have the molds for the discontinued minis. When a few orders mistakenly came in, they filled them rather than bother with the customer service issues. But they also dropped the item from the web store.
I kicked around the idea of buying a few blisters and selling the rest once they were canceled, as I figured they would be. (It would also help me be able to afford dragon princes!) In the end, I figured that a big order would just be refused, and that they just might re-add the blisters to the store.