Scarcity

The basic economic law of supply and demand states that as price increases, people are willing to supply more and demand less and vice versa when the price falls. However, when resources are limited or supply is constrained, you get scarcity. When that happens, price goes out the window. (For example, the cost of toilet paper during the pandemic.)

You know what’s always in demand, never goes out of style, and is consistently in short supply?

Excellence.