One of the first pieces of advice I received was, "Never pay anyone to help you find a job."
My skepticism of this boils down tp that the intersection between the set of great developers and the set of developers willing to pay to be listed on a job site is not a very large set, and would indeed be dwarfed by the set of poor developers willing to pay to be listed on a job site.
So the "velvet rope" of the entry fee, designed to improve the signal-to-noise rationratio, will, in my opinion, have the opposite effect.
But then, I've never build a successful product or website, so what do I know?