Rap music producers
It's all about image ladies and gentlemen. If people do not believe that you are worth the money, they will not pay for the beats you produce. Timbaland produces tracks that put a few songs on the top of the charts, now everyone thinks he's golden. You can read about how to make rap beats.
If tomorrow, Soulja Boy was to buy a Timbaland beat for $500 000, do you think it would help him? Hell no. Timbaland's beats help artists to do things: 1) Helps a good song like 'Apologize' get noticed, 2)Creates a club beat people will love.
Mostly, the 2nd factor is why rap producers get away with charging so much. Still, it requires skill for the track to do well. No mater how good the rap music producer is, if the artist sucks, nothing good is happening.
Become a good rap music producer
There are plenty of good ways to learn to become a good rap music producer. You can always read this free blog on being a rap music producer. There's plenty of good information on producing rap beats and making money rap producing.
There are other ways to climb to the top too. You can read plenty of good information out there on producing rap music, but the key is practice, practice, practice.
If you want to become one of the best rap music producers, you've gotta want it. Go out there, and learn to be the best producer you can be.