How come no one ever told me about this when I lived in the States? Word of mouth from a friend is that it’s SUPER cheap and you get TONS of stuff in every “lot” you buy. Great source for party supplies, costume accessories, novelties, craft supplies (basic, but still), etc. etc: Oriental Trading Company
We expats have to send orders to someone in the States, however, to avoid extra tax and customs charges getting slapped on.