The ease with which you photograph an event has no bearing on how much you charge for it.
I could write a long-winded reply, but, this is not the thread to post it in, so, I will just leave you with this:
http://www.petapixel.com/2012/01/26/...ices-are-wack/
Perspective.
If you were doing that full time, how would you live on $500 or $1,500 a job?
H