EBITDA is net of cost of sales....

EBITDA is net of cost of sales.

http://www.investopedia.com/terms/e/ebitda.asp
Earnings Before Interest, Taxes, Depreciation and Amortization'

EBITDA stands for earnings before interest, taxes, depreciation and amortization. EBITDA is one indicator of a company's financial performance and is used as a proxy for the earning potential of a business, although doing so has its drawbacks. Further, EBITDA strips out the cost of debt capital and its tax effects by adding back interest and taxes to earnings