U disk about how much money a?

U disk is divided into many kinds, the price is not the same, the general civilian in a few dollars or so, give you a recommendation of a Kingston 8g USB flash drive, the price of 40 yuan or so, to give you a Web site to see, /item.htm?spm=a230r.1.14.15.C2wy6E&id=10305613131&ad_id=& ;am_id=&cm_id=140105335569ed55e27b&pm_id=