depends on what youre doing. are you looking for an electrician or are you an electrician?
if youre looking for a sparky to do some work, check the Services offered forum here, or go to
MyHammer where you can offer a job, and lots of electricians can offer to do it, often underbidding each other.
if youre the electrician, you can get a general idea of what prices are like there. in my experience youll be better paid if youre self employed, but obviously you dont have the job security that you have when youre working directly for a company.