Which are fixed by the authorities

A: It is permissible if you sell the item for more than its price if this is possible but the increase in the price is for the person who owns the item and you may take the percentage you agreed on from the total amount of profit. However, if the owner made it a condition that the item should not be sold for a higher price, it should only be sold for the price which was specified by him. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.