Our new product line, “Chap-Off”, have total costs of $7.00 per box if we plan to produce it internally. This total cost per unit consists of $3.60 for direct material, $2.00 for direct labor, and $1.40 for manufacturing overhead. Moreover, a $90,000 charge for fixed manufacturing overhead will be absorbed by the product under the company’s absorption costing system. However, if we decided to purchase the tube from the supplier at $1.35 per box of 24 tubes then the direct labor and variable manufacturing overhead costs per box of Chap-Off would be reduced by 10% and direct material costs would be reduced by 25%. Both alternatives have their own advantages, so we have to use a “make or buy decision” analysis to determine whether we should produce the tubes internally or to buy the tubes externally from the suppliers. Make or Buy Analysis for 100,000 boxes of Chap-Off
The total relevant cost of producing the tubes internally is $610,000, which is $20,000 less than the total relevant cost of $630,000 if we decide to purchase them externally from the supplier. Therefore, we should produce the tubes for the lip balm by ourselves since it would save us $20,000 per 100,000 boxes or $0.20 per 1 box. Please see Table 1 in the attachment for the calculation and comparison of both alternatives. Maximum Acceptable Purchase Price for Purchasing from Supplier The maximum purchase price that would be acceptable to us if we want to buy the tubes for the lip balm from the suppliers would be $20,000 less than the original purchase price of $1.35 per unit or $135,000 per 100 units. In other words, the maximum total cost when buying from the supplier should be $115,000 or $1.15 per box of 24 tubes. At this price point ($1.15 per box) from a purely financial standpoint the cost of producing the tubes and buying the tubes is equal for both alternatives, so we might want to consider other factors (that are maybe hard to estimate in dollar value) and possible benefits...
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