Job 218 was one of the many jobs started and completed during the year. The job required $4,000 in direct materials and 400 hours of direct labor time at a rate of $10 per hour. If the job contained 600 units and the company billed at 60% above the unit product cost on the job cost sheet, what price per unit would have been charged to the customer? (Round your answer to 2 decimal places. Omit the "$" sign in your response.)