XYZ, Inc. manufactures a part that it uses in its main product. The company annually manufactures 30,000 units of this part. A supplier has offered to sell the pre-made part to XYZ management for $50. The company is operating with idle capacity.
The unit cost of manufacturing the part in-house is as follows:
Materials $14
Direct labor 12
Variable indirect costs 10
Fixed indirect costs* 13
Total $49
* Will be incurred even if the company decides not to accept the offer.
The relevant costs ("relevant costs") of manufacturing a unit of the part amount to:
$22
$26
$49
$36