I read the joseph pistone book,and yes the mother of Joey the Mook d'Amico paid 50,000 $ at a capo,for get made the son.
Jerry Agiuolo of Boston, had problems because it wasn't a made , so in the 50s promised the boss Patriara $ 100,000 per month,if he will be made,and Patriarca made him.
Agiuolo dominated boston underworld from the 50's until 1986, when the FBI thanks to the bugs installed in his office was able to catch him, Bulger helped the feds to place the bugs.