Congressional Budget Office Cost Estimate: H.R. 4225: Stop Advertising Victims of Exploitation Act of 2014 [open pdf - 15KB]
"CBO [Congressional Budget Office] estimates that implementing H.R. 4225 would have no significant cost to the federal government. Enacting the bill could affect direct spending and revenues; therefore, pay-as-you-go procedures apply. However, CBO estimates that any effects would be insignificant. H.R. 4225 would clarify the current laws against sex trafficking with regard to the advertising of such acts. As a result, the government might be able to increase the number of successful prosecutions in these cases. CBO expects that the bill would apply to a relatively small number of offenders, however, so any increase in costs for law enforcement, court proceedings, or prison operations would not be significant. Any such costs would be subject to the availability of appropriated funds."
Congressional Budget Office: http://www.cbo.gov/