If you read the income statement and annual report, there are de

here is apple's income statement
它们的SG&A 只有不到7%，这包括所有HR，legal，accounting，Sales，marketing，administration，。。。。

View: Annual Data All numbers in thousands


Period Ending Sep 28, 2012 Sep 23, 2011 Sep 24, 2010
Total Revenue 156,508,000   108,249,000   65,225,000  
Cost of Revenue 87,846,000   64,431,000   39,541,000  
Gross Profit 68,662,000   43,818,000   25,684,000  
Operating Expenses
Research Development 3,381,000   2,429,000   1,782,000  
Selling General and Administrative 10,040,000   7,599,000   5,517,000  
Non Recurring -   -   -  
Others -   -   -  
Total Operating Expenses -   -   -  
Operating Income or Loss 55,241,000   33,790,000   18,385,000  
Income from Continuing Operations
Total Other Income/Expenses Net 522,000   415,000   155,000  
Earnings Before Interest And Taxes 55,763,000   34,205,000   18,540,000  
Interest Expense -   -   -  
Income Before Tax 55,763,000   34,205,000   18,540,000  
Income Tax Expense 14,030,000   8,283,000   4,527,000  
Minority Interest -   -   -  
Net Income From Continuing Ops 41,733,000   25,922,000   14,013,000  
Non-recurring Events
Discontinued Operations -   -   -  
Extraordinary Items -   -   -  
Effect Of Accounting Changes -   -   -  
Other Items -   -   -  
Net Income 41,733,000   25,922,000   14,013,000  
Preferred Stock And Other Adjustments -   -   -  
Net Income Applicable To Common Shares 41,733,000   25,922,000   14,013,000