Price will depend on the size of the deer head being mounted, so therefore a red deer head is around four-five times the price of a Roe Deer Head. Most Important thing is to see pictures of finished work or go and visit the taxidermy workshops to check out the standard or work. DONT just go on price, as that is NO indicator of the standard of the finished work. Cut corners will lead to a second class mount, which you will always be dis-satisfied with.
Taxidermy is a form of Art.Lots of people call themselves Artists, but relatively few are true masters of their Art.