A contract between a pharmacy benefits manager and a pharmacy may not prohibit a pharmacy or pharmacist from doing any of the following:
(1) Providing a patient with information regarding the retail price of a prescription drug or the amount of the cost share for which the patient is responsible for a prescription drug.
(2) Discussing with a patient information regarding the retail price of a prescription drug or the amount of the cost share for which the patient is responsible for a prescription drug.
(3) If a more affordable substitute is available, selling the more affordable substitute to the patient.