The cost of drug rehab varies tremendously from person to person, and from program to program. Many factors influence the cost of drug rehab, including the type and length of the program, the individual needs of the patient, the location and amenities of the facility, and the payment plans that are offered. Luckily, insurance can greatly reduce out-of-pocket expenses, and there are many low-cost or even free rehab options available. The best way to determine how much you will pay is to contact the facility of your choice and speak with a treatment staff member.