Used cell phone stores do not mark the price of industry and commerce can be investigated

No. According to the provisions of the Price Law, the sale of goods marked price. The sale of goods without price indication, by the competent price department ordered to correct, confiscate the illegal income, and impose a fine of less than 5000 yuan, the Trade and Industry Bureau is not the competent price department, so you can not be punished, but the local price bureau (department) can be punished you.