This afternoon,I went shopping for a U disk and I need the one with a 4GB content.Moreover,it should be the brand of kingston .I found it in two shops.One is a supermarket,I choosed one,its content is 4GB and costs 49 yuan,but the brand of it is the one I have not seen before. Then,I went to another shop,it is a shop offer diffrent kinds of computer equipments,such as:mouse,keyboard,U disk and so on.I found the one I like there ,but it is expensive, it costs about 80 yuan and the seller did not give me a discount,at last ,I also did not take it becuase of its higer cost.I think maybe I will choose one online later.And hope I can choose the one with reasonable price.