ABC Company has been manufacturing its own shades for its table lamps. The company is currently operating at 100% of capacity, and variable manufacturing overhead is charged to production at the rate of 80% of direct labor cost. The direct materials and direct labor cost per unit to make the lamp shades are $5.00 and $6.00 respectively. Normal production is 30,000 table lamps per year. A supplier offers to make the lamp shades at a price of $10.00 per unit. If the company accepts the supplier's offer, all variable manufacturing costs will be eliminated, but the $40,000 of fixed manufacturing overhead currently being charged to the lamp shades will have to be absorbed by other products.

Instructions: (a) Prepare the incremental analysis for the decision to make or buy the lamp shades.