Rehab saved my life. I was so far gone that I needed that intense, inpatient attention.
Many rehabs are covered under the ACA. Did you sign up? If not, are you eligible for medicaid?
I also do service commitments at area rehabs that are free, like the Salvation Army. Sure, the facilities are not up to the same level as at $30k rehab, but the staff is always well trained and professional. And the people there WANT to get sober. I've been to many of the "free" rehabs and regularly see someone from these programs in an AA meeting several months later who is still sober.