i just shot a birthday party at 350 an hour... FYI...
if you know what you are worth than get what you are worth. If you are worth 10/hr well more power to you.
Just remember... Gas to the event $$, Post Processing $$, Time $$, Wear on Equipment $$, Media to provide to company $$. Will you be making any money at the end of the day? you are only gauranteed $40 per gig. And thats nothing in the photo world.
Even portrait studio people in the mall make more than that, and they dont process or use their own equipment.