CLAIM: "The MLS doesn’t allow us to enter a lower commission in a listing."

False.  The MLS has “not for public viewing” sections.  These private broker, agent-only, areas are where commission and other side agreements are hidden.  Agents are absolutely allowed to post flat fees and discounted percentages.  Most MLSs only stipulate that something must be entered in these fields. It can be $1. The MLSs cannot legally control and/or mandate specific fees should be paid.