Hubby pays his broker 10% of the proceeds. I don’t know where you’re getting your info but it’s not the case in Arizona.
My mom sold real estate in Pennsylvania 25 years ago. 25% to each agent, 25% to each broker. Commissions were negotiable but the seller had to ask.
10% is usually the Brokerage’s commission to manage long term rentals, not for Buying or Selling.