We pay nothing to be ignorant but it is highly expensive.
If you want to disarm, robotly control, manipulate and even destroy people, keep them in ignorance.
Ignorance is mostly destructive, it deafens, blinds, cages, cripples, makes us vulnerable and highly prone to abuses.
Ignorance makes us take right as wrong and wrong as right.
Ignorance makes us fearless in the midst of dangers and creates fear where there is nothing to fear.
Ignorance is not only costly, it is also an enslavement and deadly.
Invest your time and resources to seek knowledge, it is a source of security and a catalyst to peace and progress.