Make or Buy Terry Incorporated manufactures machine parts for aircraft engines. CEO Bucky Walters is considering an offer from a subcontractor to provide 2,000 units of product OP89 for $120,000. If Terry does not purchase these parts from the subcontractor, it must continue to produce them in-house with these costs: Required: What is the relevant cost per unit to make the product internally? 2. What is the estimated increase or decrease in short-term operating profit of producing the product internally versus purchasing the product from a supplier? Complete this question by entering your answers in the tabs below. What is the relevant cost per unit to make the product internally? Complete this question by entering your answers in the tabs below. What is the estimated increase or decrease in short-term operating profit of producing the product internally versus purchasing the product from a supplier