I called my mom and asked her about this. I think we were a special case. You see, my dad died when I was 16 and my mother was disabled, collecting Social Security.
She said that it was $11,000 for the full program, plus host home fees. She said that on my intake, she paid them $1200.00 down. And she said that the host home fees were $100/month. I was an out of town client, and she told them that the most she could pay for host home fees was $50.00, and if they couldn't accept that, then she wasn't going to put me in the program.
We didn't have insurance either, and so she was supposed to make monthly payments, but she doesn't remember what those payments were. I would be very surprised if they got more than $5000.00 from my mom.
I walked when I turned 18. She kept making payments until I turned 20, then she said that it was my responsibility to start paying. I threw the bills away. After like 2 or 3 months we stopped getting bills and that was the last we heard. They didn't even put it on her credit report that she didn't pay.