In my marketing and when talking to prospective clients, I say that I charge the standard commission for my city. Is that OK?

No. There is no such thing as an industry-standard commission rate. Sellers decide what fee they are willing to pay for their broker’s services and how much that listing broker should offer a broker who brings a buyer to close the transaction. Compensation is always negotiable, and consumers are encouraged to talk to their broker to understand and agree upon how they expect to be compensated.