Indeed this sale would be enough, considering it even sold for less (3 keys + strange double dynamite, so barely 4 keys in mixed), but the trade is open for only one day, so that does look like a quicksell, at the collector's items scale. The guy just wanna get rid of his collector's, he didn't even ask for item overpay to his already nice price. :) So, undecided for now, let's see what the others think.

I'm sold. Upbread.