Is trading in medicines that are sold at prices higher than their mandatory fixed prices — due to pharmacists' demand for them — unlawful, knowing that I am not the one who controls the price?

The preponderant opinion among scholars is the permissibility of price-fixing during times of high prices. It is obligatory to adhere to the price set by the state for this, in preservation of public interests, to prevent merchants from exploiting people's needs, and to maintain public order.