H. Keith Noble (defendant) bought a Buick from Logan-Dees Chevrolet-Buick, Inc. (Logan) (plaintiff). The written contract listed the total purchase price as $6,615. The contract broke down the purchase price into three categories: a $46.40 down payment, a used car allowance of $4,418.60, and a balance due of $2,150. The contract also contained an integration clause. Noble delivered the down payment, the used cars, and a check for $2,150. Logan delivered the Buick to Noble. Logan later sued Noble for breach of contract. Logan alleged that in addition to the consideration listed in the written contract, Noble also orally agreed to give Logan an insurance check for $1,532.66. The trial court awarded Logan damages of $1,532.66, and Noble appealed.