Are there any articles out there that discuss earnings and royalties for artists? I'm interested in seeing them if there are any. I mean, Ke$ha sold 14.2 million units of Tik Tok worldwide and she wrote it so despite her Warrior era being pretty lacklustre, she's surely earning enough to tide her over for a comfortable life right?

Prove me right or wrong girls.

Porcelain Black wrote Save You Tonight for One Direction's debut album and it sold 15 million copies. She said so herself.

They would keep it private, it's a direct link to how much you earn. No one talks openly about that.