Example of a Market Economy: The United States. Prices of products and wages of workers are changed only if the demand of the product provided is to change.
Example of a command economy: North Korea. In a country where everything is run by the government, it's not surprising that it would have total power over the peoples' money as well.
Example of a traditional economy: Guatemala. They sell products mostly in outdoor markets. Usually private sales people. Normally, products will be native to their country.
Example of a Mixed Economy: The United States. Although mentioned as a Market economy, the U.S. is also considered a Mixed because of it's element of government control.