400.2-306. (1) A term which measures the quantity by theoutput of the seller or the requirements of the buyer means suchactual output or requirements as may occur in good faith, exceptthat no quantity unreasonably disproportionate to any statedestimate or in the absence of a stated estimate to any normal orotherwise comparable prior output or requirements may be tenderedor demanded.
(2) A lawful agreement by either the seller or the buyer forexclusive dealing in the kind of goods concerned imposes unlessotherwise agreed an obligation by the seller to use best effortsto supply the goods and by the buyer to use best efforts topromote their sale.
(L. 1963 p. 503 ยง 2-306)