Listed here are the total costs associated with the 2015 production of 1,000 drum sets manufactured by TrueBeat. The drum sets sell for $455 each. Costs 1. Plastic for casing-$22,000 2. Wages of assembly workers-$90,000. 3. Property taxes on factory-$7,000 4. Accounting staff salaries-$31,000 stands (,000 stands purchased)-$3700o 6. Rent cost of equipment for sales staff-$36,000 7 Upper management salaries-$125,000 8. Annual flat fee for factory maintenance service-$17,000 9. Sales commissions-$20 per unit $44,000 10. Machinery depreciation, straight-line