Wrath of God(1968)

Original title: L'ira di Dio

Mike returns home in order to leave his gunfighting days behind him and settle down on a farm with his old sweetheart but things do not go as planned. Finding Jane murdered, Mike is set upon and left for dead by her 7 killers who also steal his life savings of $10,000; all in $50 dollar bills. They leave only seven dollars and Mike vows to track down every man, paying him back with a solitary dollar and death.