OP here.
MAK asked if I was charged for the order and the answer is NO.
However, at one point the website had a warning that an order cancellation fee would be in place because too many people were ordering from multiple sources and them canceling if another vendor shipped first. Their website does not currently have that statement, and I didn't think to take a screenshot at the time, because it also stated any order would be honored unless otherwise notified. They did not notify me; I had to contact them. So in essence, they were holding my money hostage. To be clear, when I placed the order, no such warnings were present.
Am I out anything? No, other than missed opportunities. Still, not a kind of business that will ever see a dime of my money.
I have now ordered from AIM, since they got some mags in. Not the Yugo BHO I was looking for to fit my front trunnion and trigger guard with on my slab-side build, but I guess you can't have everything you want in life. Bad time to build, right?