Tyler Industries currently manufactures one of its crucial parts at a cost of $4.50 per unit. This cost is based on a normal production rate of 50,000 units per year. Direct materials and direct labor costs are $2.50 per unit and incremental overhead costs related to making this part are $50,000 per year. Allocated fixed costs are unavoidable whether the company makes or buys the part. Tyler is considering buying the part from a supplier for a quoted price of $3.70 per unit guaranteed for a three-year period. What is the relevant cost of making the 50,000 units?