According to Wikipedia:
The Beastie Boys have sold 26 million records in the United States and 50 million records worldwide, making them the biggest-selling rap group since Billboard began recording sales in 1991. With seven platinum-selling albums from 1986 to 2004,the Beastie Boys were one of the longest-lived hip hop acts worldwide. In 2012, they became the third rap group to be inducted into the Rock and Roll Hall of Fame.
Hardly what I would call a novelty act. 🙄🙄🙄