The owner of a personal watercraft put an ad for its sale in the paper. Her neighbor saw the ad and told her that he wanted to buy the watercraft but had to arrange for financing. The owner suggested that they write a contract for sale then and there so that they would not have to waste any time while he got his financing. They orally agreed that the contract would not become binding unless the neighbor obtained financing, but the written contract did not mention this and appeared to be a fully integrated document. The neighbor could not obtain financing and the owner brings suit to enforce the written contract. Who will prevail