The fluffy hair makes things difficult, and you will probably need to iterate a few times to improve. If it is a 3D model for a game, the hair can be done a few ways, but 3D printing in sandstone will need an artistic touch. On the positive side, all that hair makes sculpting the muscular anatomy less difficult.
The man hours for this project are probably around 40-60 for something I'd be be proud of. Multiply by $35-120 hourly for a general cost. The skill required for something you would be happy with sounds like on the lower end of this range, but quality really is dependent on skill level and experience. Many artists will do this with a per-project price too, but someone decent will run you at least $6-800. Also keep in mind that scale doesn't really affect cost. It is vector and can be scaled up easily with good topology. Painting (texturing) in higher resolution for something huge would only add a little bit of cost as well.
There are a lot of artists on the forum willing to do work for $10 an hour, and if you are easily satisfied this might be the way to go too, but nobody good would ever charge so little. A lot of sculptors have no idea how to paint texture and vice versa. Good help is definitely hard to find, and you mostly get what you pay for.
Good luck!
Last edited: Nov 30, 2015