Amber Mining and Milling, Inc., contracted with Truax Corporation to have constructed a custom-made lathe. The machine was completed and ready for use on January 1, 2018. Amber paid for the lathe by issuing a $750,000, three-year note that specified 3% interest, payable annually on December 31 of each year. The cash market price of the lathe was unknown. It was determined by comparison with similar transactions that 12% was a reasonable rate of interest.