Two things have when selling something that is evaluated in dollars

Sometimes you travel to USA and buy some merch to sale in your country, one thing you in your country will sell in your money bill, or you buy by the internet to receive by the mail and is how your bill worth in the day you buy, so you think that you got the same money that you spent in your money you aren't having prejudice, but if with the price that you sell only with the value of your money in the day of the bought, when you returned to buy don't buy the same quantity because dollars got more expensive for your money, aparentily you don't lost in this transation because you receive the same that you spent but the same money doesn't buy the same quantity so you are loosing money, the same thought is when you are industrial in Brazil somethings are bought in here with our money but how much coast is evaluated in dollars and convert all day, like machinery, supplies (comodities), so you gonna lose money. Rute Bezerra de Menezes Gondim