$20 a day for what? U replied to mm so I'm just gonna take a guess that u meant methadone maintenance. That really depends on where u go and what kind of insurance u have. The place I was going in early 2000's I was paying $45/week and I wasn't using my insurance for it. I knew some people were payin only $5/week with some sort of government assistance but I'm not really sure how that works. I'm pretty sure most USA jails don't provide methadone which is outrageous, you'd think they'd wanna keep people subdued samething with cigs.