Wyo. Stat. Ann. § 17-10-117

Any association organized under this act, as agent to sell the products of members or purchase supplies for members may operate upon a nonprofit basis by contracting to pay the members, for products sold by said members to or through the association, the resale price minus a uniform charge to cover the expenses involved in the handling of said products; there shall also be set aside for a reserve fund a small percentage of the sale price, said percentage to be fixed by the bylaws; resale price to be the actual resale price to be based upon the average price during any period for products of the same type and quality; the uniform charges for expenses to be specified in the contract or made otherwise ascertainable or left for determination by the directors.