Just yesterday, I was notified this was available as a Cyber Monday promo.
As it's an add-on to a product I don't yet have, it seemed wise to secure the base game first.
When I came back to buy this, still Monday in every US time zone, the Drop Ended. With 12 sold. Ever.
I think I'm losing a game I didn't know I was playing.
Found this, I'm not the only one, and this isn't new:
https://www.massdrop.com/buy/firefly-the-game-bundle/talk#discussions