Which is not a cost to society of drug abuse?

A: Premature deaths from drug-related motor vehicle accidents
B: cost of incarcerating people for drug-related crimes
C: Amount of money the user pays for a drug
D: Lost work productivity because of drug dependency

C: Amount of money the user pays for a drug

This is not typically considered a cost to society of drug abuse, as it is the individual drug user themselves who pays for the drug. The other options all have broader societal implications and costs.