D. R. Curtis is a brokerage firm that acts as a go-between for producers of commodities, such as crops, and purchasers of the commodities. Curtis contacted Grant Mathews to discuss the purchase of Mathews’ spring wheat crop. Mathews agreed to sell 30,000 bushels of wheat to Curtis. Although they discussed the price, it is customary in the industry not to fix the price until the exact quality (known as the “scale”) of the wheat is established. The scale is not established until the wheat is ready to sell because the scale might cause the price to fluctuate somewhat from the agreed-upon price. This agreement was reduced to a writing in which no mention of the method of determining the exact scale was made; however, all other terms of the transaction were included. Mathews refused to sell Curtis the wheat after Curtis placed the scale at 14 percent. Curtis then had to purchase the wheat elsewhere and sued Mathews for damages. Mathews contended that because there was no agreed-upon scale, there was no agreed-upon price, and therefore, there was no contract. Is Mathews correct? Explain. [D. R. Curtis v. Mathews, 653 P. 2d 1188 (Idaho Ct. App. 1982)]