As a personal example, in a college "History of Economics" class, the professor described the "Diamond/Water Paradox". Prior to understanding how the intersection of supply and demand could lead to a market price, very smart people were perplexed how diamonds, which were rare but basically useless, were so expensive but water, a critical element to life, was so cheap.
In hindsight, it all seems so obvious but explaining this history of the concept helps add an intuitive understanding of "it's not just what an item does but how available it is that helps define the price".