thing is, most of dvdjs already have the skills in scratching, beatmatching, juggling, cutting, phrase matching etc.

They hit a plateau and decide to move on with visuals. its a sort of evolution for them.

and yes there is a point IMO.
As a service provider; your product (dj performance) benefits an added value. Which therefor commands a higher salary.

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"The only thing that interferes with my learning, is my education"
- A. Einstein