Hart Company produces a part that is used in the manufacture of one of its products. The costs associated with the production of 5,000 units of this part are as follows:

Direct materials $120,000 Direct labor 170,000 Variable factory overhead 75,000 Fixed factory overhead 160,000 Total costs $525,000

Of the fixed factory overhead costs, $70,000 are avoidable. Hart Company has offered to sell 5,000 units of the same part to Hart for $86.50 per unit. Assuming there is no other use for the facilities, should Hart Company make or buy the part?