The commission paid to a broker should be based on what value he can bring to your transaction(s). While this particular transaction may be "routine", by being an expert in the market he may be able to identify that you are paying too much or getting a great deal. Keep in mind that he does not get paid until you close. There are other brokers in the area that I am sure would accept a lower commission but there is that old adage "You get what you pay for."
With that being said, it sounds like you purchasing a property. In most cases, the Seller has already built in the commission to the sales price and it will be paid regardless of you having a broker or not. As a Buyer, I always recommend being represented by competent broker as there is no cost to you. Talking to your broker would be your best option.
Apr 12, 2013