1 An oil change typically costs $20-$55, depending on whether the work is performed at an independent shop, an oil-change retail chain or a dealership, and the number of quarts of oil used in the vehicle. Oil changes involve more parts than just the oil itself. 2  Included in the cost of any oil change is the cost of labor, the oil, shop supplies, an oil filter and any associated gasket, O-rings or seals, plus the cost of disposing of the used oil. 3  Labor is not charged in the same way that is for other repair jobs.
Trade surplus is defined as that a nation is exporting more than it imports, giving it an inflow of currency. An example of trade surplus is that China is exporting more goods than China imports from other countries. YourDictionary definition and usage example.
The U.S. had a trade surplus with NAFTA countries of $28.3 billion for services in 2009 and a trade deficit of $94.6 billion (36.4% annual increase) for goods in 2010. This trade deficit accounted for 26.8 percent of all U.S. goods trade deficit.