The concept of inflation (the depreciation of purchasing power of a specific currency) applies to other goods besides money. Inflation is related to the Law of Supply and Demand. As the supply of a commodity increases, the value decreases. Conversely, as the good becomes more scarce, the value of the commodity increases. This same concept is also applicable to tangible items such as vintage baseball cards and rare art. These are rare commodities that cannot be authentically replicated and therefore command a high value on the market. On the other hand, mass-produced rookie cards and replications of Monet's work are plentiful. As a result, they yield little value on the market.

Inflation and the opposite principle of deflation can also apply to intangible goods. When looking at the job market, this becomes quite evident. Jobs that require skills that are rare or exceptional tend to pay higher wages. However, there are also compensating differentials that arise because of the risky or unattractive nature of undesirable jobs.