(1) (a) It is unlawful for any person engaged in commerce, in the course of such commerce, either directly or indirectly, to discriminate in price between different purchasers of commodities of like grade and quality, where either or any of the purchasers involved in such discrimination are in commerce, where such commodities are sold for use, consumption, or resale within the state and where the effect of such discrimination may be substantially to lessen competition or tend to create a monopoly in any line of commerce, or to injure, destroy, or prevent competition with any person who either grants or knowingly receives the benefit of such discrimination, or with customers of either of them. (b) Nothing in this chapter prevents: (i) differentials which make only due allowance for differences in the cost of manufacture, sale, or delivery resulting from the different methods or quantities in which such commodities are to such purchasers sold or delivered; (ii) persons engaged in selling goods, wares, or merchandise in commerce from selecting their own customers in bona fide transactions and not in restraint of trade; and (iii) price changes from time to time in response to changing conditions affecting the market for or the marketability of the goods concerned, including actual or imminent deterioration of perishable goods, obsolescence of seasonal goods, distress sales under court process, or sales in good faith in discontinuance of business in the goods concerned.

(a) It is unlawful for any person engaged in commerce, in the course of such commerce, either directly or indirectly, to discriminate in price between different purchasers of commodities of like grade and quality, where either or any of the purchasers involved in such discrimination are in commerce, where such commodities are sold for use, consumption, or resale within the state and where the effect of such discrimination may be substantially to lessen competition or tend to create a monopoly in any line of commerce, or to injure, destroy, or prevent competition with any person who either grants or knowingly receives the benefit of such discrimination, or with customers of either of them.

(b) Nothing in this chapter prevents: (i) differentials which make only due allowance for differences in the cost of manufacture, sale, or delivery resulting from the different methods or quantities in which such commodities are to such purchasers sold or delivered; (ii) persons engaged in selling goods, wares, or merchandise in commerce from selecting their own customers in bona fide transactions and not in restraint of trade; and (iii) price changes from time to time in response to changing conditions affecting the market for or the marketability of the goods concerned, including actual or imminent deterioration of perishable goods, obsolescence of seasonal goods, distress sales under court process, or sales in good faith in discontinuance of business in the goods concerned.

(i) differentials which make only due allowance for differences in the cost of manufacture, sale, or delivery resulting from the different methods or quantities in which such commodities are to such purchasers sold or delivered;

(ii) persons engaged in selling goods, wares, or merchandise in commerce from selecting their own customers in bona fide transactions and not in restraint of trade; and

(iii) price changes from time to time in response to changing conditions affecting the market for or the marketability of the goods concerned, including actual or imminent deterioration of perishable goods, obsolescence of seasonal goods, distress sales under court process, or sales in good faith in discontinuance of business in the goods concerned.

(2) Upon proof being made, at any suit on a complaint under this section, that there has been discrimination in price or services or facilities furnished or in payment for services or facilities to be rendered, the burden of rebutting the prima-facie case thus made by showing justification shall be upon the person charged with a violation of this section. However nothing in this chapter shall prevent a seller rebutting the prima-facie case thus made by showing that his lower price or the furnishing of services or facilities to any purchaser or purchasers was made in good faith to meet an equally low price of a competitor, or the services or facilities furnished by a competitor.

(3) It is unlawful for any person engaged in commerce in the course of such commerce, to pay or grant, or to receive or accept, anything of value as a commission, brokerage, or other compensation, or any allowance or discount in lieu thereof, except for and not exceeding the actual cost of such services rendered in connection with the sale or purchase of goods, wares, or merchandise.

(4) It is unlawful for any person engaged in commerce to pay or contract for the payment of anything of value to or for the benefit of a customer of such person in the course of such commerce as compensation or in consideration for any services or facilities furnished by or through such customer in connection with the processing, handling, sale, or offering for sale of any products, or commodities manufactured, sold, or offered for sale by such person, unless such payment or consideration is available on proportionally equal terms to all other customers competing in the distribution of such products or commodities.

(5) It is unlawful for any person to discriminate in favor of one purchaser against another purchaser or purchasers of a commodity bought for resale with or without processing, by contracting to furnish or furnishing, or by contributing to the furnishing of, any services or facilities connected with the processing, handling, sale, or offering for sale of such commodity so purchased upon terms not accorded to all purchasers on proportionally equal terms.

(6) It is unlawful for any person engaged in commerce, in the course of such commerce, knowingly to induce or receive a discrimination in price which is prohibited by this section.