CPM, which stands for Cost-Per-Mille (Mille is Latin for âthousandâ), is when the price is based on 1,000 impressions.
What causes inflation is also a key argument in economic theory. Some economists believe that there are different types of inflation â cost-push and demand-pull inflation. Cost-push inflation is supposed to be a type of inflation caused by rising prices in goods or services with no suitable alternatives. An oft-cited example of this inflation is the oil crisis of the 1970s.
1 Deflation is when the general level of prices is falling. This is the opposite of inflation.  Hyperinflation is unusually rapid inflation. In extreme cases, this can lead to the breakdown of a nation's monetary system.