translate English to French: Of course, there are words such as "FREE", "Half Price", 50% Off" and "Guaranteed" that have proven to be powerfully effective moving undecided prospects to act.
Évidemment, on a démontré que des mentions comme << GRATUIT >>, << Moitié prix >>, << 50 % de réduction >> et << Prix garanti >> peuvent convaincre un client potentiel indécis d'agir.