Listed here are the total costs associated with the production of 1,000 drum sets manufactured by TrueBeat. The drum sets sell for $499 each. Costs 1. Plastic for casing—$23,000 2. Wages of assembly workers—$87,000 3. Property taxes on factory—$8,000 4. Accounting staff salaries—$32,000 5. Drum stands (1,000 stands purchased)—$34,000 6. Rent cost of equipment for sales staff—$36,000 7. Upper management salaries—$150,000 8. Annual flat fee for factory maintenance service—$20,000 9. Sales commissions—$19 per unit 10. Machinery depreciation, straight-line—$49,000 2. Compute the manufacturing cost per drum set.

Google started as one of many internet search engines, amazon started as an online book seller, and ebay began as a site where people could sell used personal items in auctions. these firms have grown to be so large and dominant that they are facing antitrust scrutiny from competition regulators in the us and elsewhere. did these online giants grow by fairly beating competition, or did they use unfair advantages? are there any clouds on the horizon for these firms -- could they face diseconomies of scale or diseconomies of scope as they continue to grow? if so, what factors may limit their continued growth?