Nanakuli Paving & Rock Co. v. Shell Oil Co.
Facts
Nanakuli, a major paving contractor on Oahu, bought all of its asphalt from Shell under a long-term 1969 supply contract stating the price was "Shell's Posted Price at time of delivery." Nanakuli claimed that in Hawaii's asphaltic paving trade suppliers routinely gave "price protection" on work already committed at the old price because government contracts did not allow escalation clauses, and that this usage was reinforced by Shell's own price protection of Nanakuli in 1970 and 1971. In late 1973 Shell announced a price increase from $44 to $76 effective January 1, 1974, but gave no meaningful advance notice and refused to protect Nanakuli on 7,200 tons already committed. Evidence showed close commercial ties between the parties, Shell's knowledge of Nanakuli's bidding practices, and widespread price protection by aggregate suppliers and Chevron in the same local paving market.
Issue
Whether the jury could reasonably find that Shell breached the 1969 contract by refusing to price protect Nanakuli in 1974 despite the contract's express term of Shell's posted price at time of delivery. Relatedly, whether trade usage, Shell's course of performance, and the U.C.C.'s good-faith requirement could qualify that express price term.
Rule
Under the U.C.C., an agreement includes not only its express terms but also applicable usage of trade and course of performance. A usage or course of performance may supplement or qualify an express term if it can reasonably be construed as consistent with that term; it need not be universal, only regularly observed enough to justify an expectation that it will be followed, and a party may be bound by usages of a locality or related trade of which it is or should be aware. For merchants, good faith in performance requires observance of commercially reasonable standards of fair dealing in the trade.
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If North Glacier Petro later raises its posted price and refuses to protect Crescent Ridge on previously committed public work, which argument for Crescent Ridge is strongest?