I do not really know much about economics, but I need to do a price comparision of a certain product between countries in Europe. The product is a pack of specific brand of cigarettes. We know that for instance in Spain the price of this pack of cigarettes costs 5 euros and just 2.6 euros in Bulgaria. However, given the difference in average wage in these countries, it might actually be that these cigarettes are worth more in Bulgaria than in Spain as they took more of a person's income. How would you express such difference? Is this what PPP is doing? As in, is PPP expressing the price of how much something is worth in terms of american dollars? Or is it something else?