Is A-List Models and Talent legit?

I had a brief phone conversation with a representative and she mentioned a "cost for coaching" that I will have to pay. I don't know what that coaching entails nor how much it costs. Otherwise she stated that they will be taking 20% commission.

I have an in-person interview with them in a few days during which I will ask for more details. I am just confused on whether a coaching fee in general is a red flag or only when at a high price.