Never got to complete the collection last time, think they were sold in the restaurants?
(//http://i11.photobucket.com/albums/a190/dannyandjackie/a-9.jpg)
I'm not sure if I saw those but they had quite a few very nice designs of expresso cups available in the boutiques but I don't remember this design. Oh wait maybe I saw them in the Disney Gallery, check there! I didn't notice any being sold in the restaurants but it's all a blur now so I can't say for sure.
Good luck and have fun!