A recent survey done by Longwood University and published in the Wall Street Journal, the answer says its a lot, as in $25,000 worth of a lot.  The results show that an experienced agent will net you about $25,000 more than an agent with little or no experience.  At the Rob Levy team, we have been selling homes in Portland since 1988.  We ARE experienced.

You can see the report here...  http://online.wsj.com/article/SB10001424127887324123004579057500395585922.html