On sale in pharmacies are: 1) prescription drugs without any refunds (those always paid 100%, not covered by percentage discounts, lump sums, etc.) and 2) prescription drugs with the category: covered by the above-mentioned official bonuses, which may be cheaper for the patient, if he receives a refund on the prescription. If not, he pays 100% of its value. Questions A) Are prescription drugs from the category of medicines with refunds (2) but sold as 100% medicines (without reimbursement on prescription) offered in pharmacies at the same (identical) price? B) Are prescription drugs from the category of drugs without reimbursement ((1) - always paid 100%) offered in pharmacies at the same (identical) price? C) Is the price of the drug (2) in the price after reimbursement fixed (identical amount) in each pharmacy, or can the prices of drugs after reimbursement vary depending on the initial price of the drug in a given pharmacy as the basis for calculating the price after reimbursement (price of the drug 100% minus the amount of reimbursement)?