Are you sure about that? http://www.omaha.com/townnews/crime/prop-money-used-in-movie...
> Owning prop money in itself is not a crime. But it's a crime if people try to pass the prop bills off as real money, said Capt. Jim Duering of the Grand Island Police Department.
Seems like the same principle would apply if you were selling it for the purpose of enabling fraud.