Well, I don't really know what an exceptionally high rate is then apparently lol.  I'm new to this.   

I think 15 minutes is probably pretty reasonable, sometimes more, sometimes less.  So from the sounds of things, $30 is perfectly reasonable.  What about charging for extra stuff like clothes?  Do you know (you said it wasn't up your alley) if that's a cost that should be passed to the customer?  My thoughts on it are I'm using it to produce their requested pics, but after that photoset they won't have any more use of it!  I was toying with the idea of a percentage split, like 25/75.