(plaintiff appealed from summary judgment dismissing action against defendant for breach of contract and violation of Unlawful Sales of Advertising Practices Act (N.D.C.C. ch. 51-15) and awarding defendant attorney fees; appellate court affirmed, concluding trial court did not err in dismissing plaintiff’s breach of contract claims, Unlawful Sales Act does not apply to, or create cause of action against, a purchaser, and trial court did not err in awarding defendant attorney fees).