I have.. absolutely no idea on pricing, but. xD I just wanted to stop and drop a bit of advice at you.
Generally, you should stay away from using black for shadows, even if they are meant to be dark. Black is very invasive and eye-stealing. Things tends to look a lot more together and alive with colored shadows instead - the reddish-brown shadows on her neck, for instance, look really nice. P:
The same can be said for white highlights, though not quite so heavily. They're okay for making things look really shiny.