To anyone else who didn't get in on these before the wolves scarfed them all up...MidwayUSA, Primary Arms, DSG Arms and others have "Notify" options on their sites with these mags (which should all be received by those outfits in the next couple days if my "guesstimates" are correct). Get on those lists and snag 'em when you get the notification. Once the initial waves of buyers get their fill (Brownells is the single dealer I know that has received ANY of these mags at this point), demand will settle, supply will catch up and they'll be readily available at most locales for ~$18.
Good luck and God speed to all interested!