Prescription drug costs for Tricare users are set to rise Jan. 1, some by as much as 42%. Effective Jan. 1, 2020, the price of all generic drugs, brand-name drugs and non-formulary drugs purchased through the mail-order pharmacy and through in-network retail pharmacies will increase. Costs at out-of-network pharmacies will also increase. Drugs received through on-base pharmacies will continue to be free. Learn more about the new prices on Military.com.