I want to get my son into an alcohol rehab, but we're low on cash. Any ideas?

I've already convinced him that alcohol isn't going to do him any good. He has now realized that it's better if he undergoes treatment. Alcohol rehabilitation costs so much, and we can't afford it. Does anybody have any suggestions about this?

: http://alcoholdrugstreatment.info/i-want-to-get-my-son-into-an-alcohol-rehab-but-were-low-on-cash-any-ideas