if I'm able to take a head shot would this increase my $$$ or is it all depending on the look/quality of the fur. my rifle is accurate out to 100 yards I'm just thinking what if i get this opportunity and is it really going to make a difference in the end.

Depending on the look of the fur, the time of the year, the health of the predator ( what kind of fur are you looking into???), and bullet placement on the predator or varmint.