Section 75-87 - Private action presumptions(a) In any private action brought under this Article, a violation shall be presumed to have occurred if: (i) the prevailing price under G.S. 75-81(4)(a) for any grade, brand or blend of a motor fuel sold by a refiner or terminal supplier to a wholesaler or retailer is greater than the price of the same grade, brand or blend of motor fuel sold by such refiner or terminal supplier directly through its own motor fuel outlet or through the outlet of an affiliate of said refiner or terminal supplier; or (ii) if the product price of any grade, brand or blend of a motor fuel sold by a wholesaler to a retailer is greater than the retail price of the same grade, brand or blend of motor fuel sold by such wholesaler through its own motor fuel outlet or the outlet of an affiliate of said wholesaler, provided the method of delivery and quantities of each delivery of motor fuel to the retailer and to the wholesaler's outlet or affiliate's outlet are the same or comparable.(b) A party may rebut the presumption created by this section by presenting evidence to establish his cost of the grade, brand or blend of motor fuel in question, or by qualifying for an exception under G.S. 75-82. 1985 (Reg. Sess., 1986), c. 972, s. 1.