Rick;
On the skulls you mentioned (Caribou, Elk, Moose, deer, etc.):
To my knowledge, there is no market for those skulls once the antlers or horns and skull plate have been removed. They would then be considered culls.
Any damage to the bone structure of a skull (no matter how slight) causes the skull to be of less value and most will be worthless if a bullet hole is in the skull or if the skull is fractured from a blow to the head etc.
