Well, it works. Yay for spartan. :p Dangling breasts would triple the sales. ;p
Again, even the work is sloppy, would readers of an ebook would flip through it ONCE. The only time where the cover applies would be point of purchase. Would most authors care? And why would they pick poser artists when there's general illustrators around (just a rhetoric question, no offense at all) that can do "must-buy" work for a larger sum (read below).

We'll leave it to Poser 10+ and Victoria 7/ APM 2014 to be the cover of Ballistic Production's EXOTIQUE series (real hardcover books) though.

p/s: I wonder how Stephen King's Lisey's Story would sell if a Poser Render was on it (regardless of quality). I for one, bought Cell because the presentation and packaging looked awesome.

In This Twilight- My FIRST public poser work in 2 years!
Also the reason why I endorse postwork (:D)