Which basically tells me (if I'm reading this correctly) that these authors are doing well because of their established following. A new author would have no following, so where exactly is the benefit to that new writer if there is no distribution or marketing?
As a personal note: I don't find any of the covers at all appealing, they look very amateurish. And the website design hurts my eyes a bit, the colours are a bit too contrasting. A more subtler blend than the dark dark blue and the beige would probably make the effect a lot more pleasant.