Like anything in life, you get what you pay for (or what your insurance will pay for.) Detox can be as little a $1,000. Outpatient rehab ranges from $5,000 – $10,000. In-patient rehab can range anywhere from $6,000 (30 days) for basic rehab to $60,000 (90 days) for  luxury treatment centers. You can learn more about the cost of treatment centers here.