In addition to below, only 10% of homeowners sold their houses themselves, without a realtor, in 2011. The average loss per house was 65K - that is when sellers sold themselves, they lost.
Now you see that 5 to 6% commission will be a good investment with a great return...
Because of how little exposure the homeowner gets - in comparison with MLS exposure and agressive marketing campaign a good realtor will do for you - the do it yourself way will make you loose a lot of money.
However, getting a really great realtor and preparing the house for sale are paramount.
Blogging, UTube videos on the house and community, Pintrest...some FSBO paid sites are the tools for your home selling quest.
Best of luck,
Beachfront Realty, Inc.