Any agent in any MLS can sell you any house listed with any real estate firm.

Everyone has access to the same inventory. 

However, not everyone has the same:

• knowledge of the marketplace
  
• professional training and experience
  
• personal orientation toward service
  
• knowledge of house hunting
  

Many homeowners believe classified advertisements sell real estate.

However, only one person out of 50 ultimately buys the house they first call about. Most buyers have not analyzed their finances, and so have no idea what they can afford. Also, few buyers have formed a clear picture of their requirements for a home.

Good real estate professionals know how to determine clients needs and wants, how to qualify them financially and how to match them to the home they need. They can direct the client from the unsuitable house they called about to the suitable home they are really searching for.
   
The people who sell houses are real estate professionals. Their job is to make sure that every agent in the community knows about your home, so that when a well-suited prospective buyer comes along they can match that buyer with your home.