Having bought an Addams Family NIB in 1992, I can safely say no pin now will ever reach it's lofty sales numbers, just too completely different a world now than then. You have to realize there were pins just about everywhere back then, 7/11's, video stores, any place that had room would have a couple of pins or vids, today that is practically non-existent, and there is no way the home market can make up that difference.
Could GB be a bestseller for Stern, sure, but I think it is way premature to judge it either way.