Food Store, Food Store/Pharmacy Combination, and Pharmacy Only Vendors. The State agency shall establish a maximum price payable for each WIC-approved food item, which shall be calculated as follows: Based on the WIC Management Information System calculation, the State agency shall determine every month the peer group average for each WIC-approved food item; and Except as provided in §C of this regulation, the maximum price payable for a food instrument prescribing infant formula shall be: Equal to 125 percent of the peer group averages as determined by the WIC Management Information System calculation for the individual food items on the food instrument; or Limited to an amount determined by the Program. Military Commissaries. The maximum price payable by the State agency for a food item redeemed by a military commissary is the price charged by the military commissary. The maximum price payable to vendors that are determined to derive more than 50 percent of their annual sales revenue from the redemption of WIC food benefits may not exceed the Statewide average price per food item paid to all other vendors.