May i have an input, since i think i know the model your thinking of?
I dont think in its current condition, if the buyer saw the wire frame, that anyone would buy it. mostly because the model itself is set up in a very non-compatible build, you have several polygons with more than 4 vertices, which cause lighting error, and wholes in the mesh when exported. While trying to texture it, i had to rebuild the knees, part of the face, and do some work to the feet, so that it looks identical but exports properly.
Other than that, without a texture and an animation this character wont sell at all.
Without animation , with a texture this model might sell a couple of copies... maybe.
With animation, with a texture, and maybe with a normal map, this character has a chance to do ok.
With all of that, and putting it in a bundle with related other monsters, this model would sell great if the mesh was fixed and proper in all of the models.
for good price ideas, check out
http://www.reigniv.com/vstudio/vincent is well known to be a good modeler animator and texturer around here and these are his prices. if you can find some custom clients you get paid much better.