 Drug Free Australia contrast these ongoing maintenance costs with Sweden's investment in, and commitment to, a drug-free society where a policy of compulsory rehabilitation of drug addicts is integral, which has yielded the one of the lowest reported illicit drug use levels in the developed world, a model in which successfully rehabilitated users present no further maintenance costs to their community, as well as reduced ongoing health care costs.A substantial part of the money for buying heroin is obtained through criminal activities, such as robbery or drug dealing.King's Health Partners notes that the cost of providing free heroin for a year is about one-third of the cost of placing the user in prison for a year.