The problem with a graphic designer.

Hey guys!
I want to get some points of view from graphic designers about an experience I recently had with one. First, we accorded a budget of 400 dollars for a job that included some Flash, some design and of course, nice presentation. The deadline was around 2 weeks; I didn’t ask him for anything because I trusted him. So, when he delivers I was unhappy with some of the designs and he comes all grumpy at me, telling me what my mistakes were and that if I wanted him to fix those mistakes he would charge me with another 200, so I accepted. Then I realized that some text was wrong and I sent him the correct one and he charged me another 80 bucks just for making him so the same thing twice. Is this normal? What would you have charged me? What could I have gotten for 680 bucks from the beginning?