You are asked to look over the intern's estimate before the information is shared with members of management who will decide to continue to make the monitors or buy them. The company's controller believes that the estimate may be incorrect because it includes costs that are not relevant. If Zee-Drive buys the monitors, the direct labor force currently employed in producing the monitors will be terminated and there would be no termination costs incurred. There are no materials on hand and no commitments to suppliers to purchase materials, so all materials would need to be purchased to make the monitors. Variable overheads are avoidable if monitors are bought. Fixed manufacturing overhead costs would be reduced by $42,900, but non-manufacturing costs would remain the same if monitors are bought, Fill in the differential analysis. Make or Buy Decisions Differential Analysis Report Purchase price of 16,000 monitors Differential cost to make: Direct materials Direct labor Overhead Differential income (loss) from making monitors Replace or Keep Decision Differential Analysis Report Cost of replacing old machine: Annual differential decrease in cost x number of years Total differential decrease in cost Proceeds from sale of present machine Cost of new machine Net differential (increase)/decrease in cost, six year total