Diversion only cost 25 dollars a month. In Diversion you don’t have to pay to have a physical or mental health exam. The mental health exam is included. I drug test about once a week but I hear it decreases the longer you are in the program. The probation people in my group attend less AA/NA meetings than the Diversion people. Luckily, I have great insurance that paid for my rehab that was required for Diversion. Otherwise, I don’t think the cost is much different between the two.