It’s obvious that the cost of drug rehab varies. The average cost for treatment of alcohol anddrug abuse was an estimated $1,433 per course of treatment in the early 2000s, according to a new report released by The Substance Abuse and Mental Health Services Administration (SAMHSA). The report, “Alcohol and Drug Services Study Cost Study,” finds that home treatment for alcohol or drug abuse cost $3,840 per admission and outpatient methadone treatment cost $7,415 per admission in 2002.