If you really knew what full service brokers actually do for the seller, you wouldn't be so shortsighted.  Also, the listing broker has to share the commission with the buying broker.  Please take the time to read up on  the benefits of a full service broker by going to any one of 100's of websites.  For starters; www.realtor.com.  You can't "revert" back to a full service broker once you are in a lawsuit with a buyer because something went bad.....