Free with money? (6)
I believe the answer is:
ransom
I believe this clue is a double definition.
'free' is the first definition.
(thesaurus)
'money?' is the second definition.
(I've seen this before)
'with' is the link.
(Other definitions for ransom that I've seen before include "Buy freedom" , "Kidnap money" , "Price demanded for release" , "Romans (anag)" , "Kidnapper's demand" .)