When they first were available, their debut coincided with a strike at, I think, the port of Long Beach. So containers of the mugs were ready to be delivered to the parks, but there didn't seem to be anyone to deliver them. That added to the scarcity of a very popular item. Deliveries were few and far between. And scarcity with Disney means SUPER hot sales (and, of course, eBay!). Now, the stock seems to be fairly steady and reliable. Even during the holidays, the displays in both parks had a good selection every time we passed by them.