The article explores how prices and inflation rates come together over time. By using special tests, the researchers found that some prices and inflation rates are getting closer, while others have already reached a balance. They looked at data from Italian cities between 1970 and 2003 and discovered that most inflation rates are converging, but only a few price levels are doing the same. The tests they used helped them figure out which economic indicators are moving towards each other and which ones have already done so.