UBA’s Special Report – Trends in Prescription Drug Benefits explores our Health Plan Survey findings in more detail, particularly examining what’s happening with prescription drug plan design among different group sizes, regions and industries. When it comes to copay amounts, median retail prescription drug copays are $10/$30 for two-tier plans, $10/$35/$55 for three-tier plans, and $10/$35/$60/$100 for four-tier plans. These amounts have remained largely flat from 2014.