EWOT

I went to shopping mall several days ago around Eastview. I got a pair of slippers in a store because of the fancy design and super comfort, also because I saw a lot of people waiting in line to buy those. So I got one pair for 10 dollars. This weekend I went there again with my friend, he wanted to get ones, too. We walked into the store, this time, there were not many people there. And I noticed that the price went up to 12 dollars. This change corresponds to law of demand. When people want more, the supply goes down, store runs out of goods, the price increases.