Nine-pricing behavior

Nine-pricing behavior is the disruptiv psychopathic behavior of
setting the prices of products and/or services so that they end in 9s,
which creates the false impression that the product or service is less-expensiv
than it actually is.

An example of that is the price $19.99, which is 20 dollars,
but which vaguely appears to be substantially lower than 20 dollars
becuz it begins with a 1.

Nine-pricing behavior is very prevalent in the United States,
which reflects the prevalence of psychopaths who are in
positions of price-setting power therein.