It depends what they can do for you. As I know, you should have GMAT score at least and prepare transcript by yourself. Does $500 include nortariation fee, if don't, it really is a good bussiness for the company.
I have passed the interview and Medical Check-up and want to study MBA in York. Now I want to find a agent company to help me. They charge me us$500. Please tell me if this fee is deserved.