You can negotiate, but as others have said...you get what you pay for. The "flat rate" companies are not looking our for your best interests and have no motivation to get your home sold for top dollar. Furthermore, buyers agents are now forced to disclose these listings to their buyers...because the flat rate companies are offering limited co-op commissions to buyer's agents. So if the buyer's agent can't get paid by the seller/listing company then they have to ask their buyers for it. Buyers refuse and are happy to skip those homes!