I have had good results with Darius Mostoufi. Excellent work with lots of awards. He charges $250 for ducks, $300 for medium size geese and $350 for honkers.
I have attached a pic of a wood duck he mounted for me as well as a link to his website. Check out the photo gallery of mounts...
Be patient though...the guy is very busy.
Darius Mostoufi Taxidermy