Everyone knows that prescription drugs have become far too expensive in Florida. The average annual cost of prescription drug treatment increased more than 25% between 2015 and 2019 alone, AARP reports, while the annual income for Florida residents only increased 13%. High drug costs are a key reason Florida is one of the five most expensive states in the nation for health care, and why Floridians pay so much for health coverage. Marketplace concentration is to blame for this problem.