An MLS (Multiple Listing Service) flat-fee listing is an ‘à la carte’ listing with a real estate broker who accepts an upfront flat-fee rather than a percentage of the sale price. A flat-fee brokerage unbundles the services a traditional real estate brokerage offers. It lists the property for sale in the local MLS à la carte without requiring the seller to use all of the listing broker’s services. This is how “realtor-friendly” sellers can list on the MLS and save about half of the traditional commissions.