An internally produced part is used by a company in making one of its products. A total of 18,000 units of this part are produced and used every year. The Accounting Department reports: Per Unit $ 3.90 $ 8.50 $ 9.00 $ 4.40 Direct materials Direct labor Variable manufacturing overhead Supervisor's salary Depreciation of special equipment Allocated general overhead An outside vendor has offered to sell the part to the company for $28.70 each. If this offer is accepted the supervisor's salary and all of the variable costs can be avoided. The special equipment used to make the port has no salvage value or other use. None of the allocated general overhead would be avoided if the part were purchased. Also, the space used to make the part could be used to make more of one of the company's other products, generating an additional segment margin of $30,000 per year. The financial advantage (disadvantage) for the company as a result of buying the part should be $ 2.80 $ 8.00