I used to work for somebody who had a couple of degrees in Business.
So I go in asking for a raise.
He's like I was wondering when you'd come in.
I countered with 'well you could have offered'.
He's like 'why should I pay you more for doing the same job?'
Me: ' because I'm really good at what I do'
Him: ' so why should I pay you more for doing the job I hired you to do?'
Be prepared for a conversation like this.
Practice with a buddy as this sort of thing can really throw you off your game.