It's getting harder and harder to make money selling albums these days.

With the Spotify of the world squeezing artists, they have to rely more on other revenues streams, including appearance fees.

GQ has a new article on "The Lucrative World Of Club Appearances", and it reveals what some of your favorite Hip Hop stars get just for showing up.

50 Cent: Once split $4 million with Paris Hilton and Lenny Kravitz to attend an Ed Hardy function. Future: 250K for a New Years Eve appearance. Nicki Minaj: 236K for NYE appearance, and got sued by promoters because she bailed after 34 minutes, not the required 60 minutes. Ray J: 150K to show up in Dubai.

Lil John: Six figures, but they always make him spin. Scott Disick: 70K, but more overseas. Rich Homie Quan: They don't get specific, but say it's a lot. (We know he got 90K to do NYE this year.) Quincy Combs (Puffy's son): 10K.