Amazon.com has announced its performance for the first quarter of 2010. It noted a 46 percent rise in its sales amounting to $7.13 billion, and a 47 percent increase in its cost of sales which amounted to $5.5 billion, reports say. Also, the company gained a $185 million foreign exchange rate gain during the said period, reports add. %% The company’s net income soared 69 percent to $299 million, reports say. Sales in the North America saw a 47 percent increase to $3.78 billion in the three months, while the international segment sales rose 45 percent to $3.35 billion, reports add.