I first saw the listing for Best Buy some time after midnight on October 13th. I don't know how long it had been live at that point but it was still in stock and it said "only 10 available" so I didn't bother creating a thread for it at that time.
I don't know if that's how many they started with or if they started with more and that's all that was left. It was sold out not long after that I think. I haven't seen it in stock after that.