BE5.5 - Using Extel to Evaluate a Make-Vertus-Buy Decision PRODLEN Grunar industries produces the component parts needed for its popular non-commercial use drones. One of the key parts has become more costly to produce than first planned, howeves, so management is considering outsouscing that part. If the company decides not to manufacture this part. a portion of its figed manufacturine overhead costs would continue, The Complete the schedule to support the decision of whether to make or boy the part. 10 casts 10 produce one wuch part intemally and to purchase on part from the suppler are shen here. Should Grunar continue to make the part or buy it from the supplier