Haver Company currently produces component RX5 for its sole product. The current cost per unit to manufacture the required 50,000 units of RX5 follows. Direct materials $ 5.00 Direct labor 8.00 Overhead 9.00 Total costs per unit 22.00 Direct materials and direct labor are 100% variable. Overhead is 80% fixed. An outside supplier has offered to supply the 50,000 units of RX5 for $18.00 per unit. Required: 1. Calculate the incremental costs of making and buying component RX5.