Flatout, I just threw my opinion in the ring upon reading of the situation. It is what I would do, because I understand that besides the time and the effort on my side people make mistakes. Even if it is a big corporation that handles such a loss, that corporation is comprised of individuals that are all still human and therefore not perfect.
I would let them know about it on account of both my moral compass and the thought of "if they take the extra and put it back on the site, maybe someone who has been wanting one would now have a chance." Of course, that someone may have the intent to sell it for profit only but I don't know that. Again, that's just me.
Toasty the Baker (do you bake gluten-free?

) is free to do whatever he wants with the extra, and I'm pretty sure when he placed the original order(s) the controllers were for himself or family/friends. I did not mean for this to turn into an ethics discussion. Although, if you buy something just to flip it shame on you (flippers are the reason why I've lost my magic touch on Mondo drops).
And Flatout, I never liked the Jedi anyway.