FSBO might work well sometimes but, as much as I might like to save the buyer a few bucks, I still prefer to use a good realtor. I understand using comparatives to assess a fair asking price but if I had gone the FSBO route on my last sale (several years ago) I would have mispriced the property and lost out quite badly.
Not only did my realtor do all the work and provide my property with excellent market exposure, he also introduced numerous well-qualified serious buyers and he sold it for a price which provided me with $50K more than if I had sold at what I had determined to be the probable market value. And that extra $50K was after his full commission! In my mind he earned every nickel ... and then some!
Also, keep in mind that many good realtors will negotiate a lower commission rate if pushed. Even if you agree to the full regular commission, you can always negotiate it down if he/she brings you an offer below asking price. It could well be in their interest to slash their commission in order to reduce the difference between your asking price and a lowball offer.
Smart realtors will often do whatever it takes to get the deal done, even if it means picking up a lower commission, it gives them guaranteed cash now instead of "a chance" of more cash later, and they can move on to the next deal.
A really good realtor can be a very valuable partner in the transaction and well worth the money, but a lazy or inept one can be an expensive problem, so choose your realtor carefully!
Good luck.

In fond memory of Taipan, a model of modesty, decency, dignity and tolerance. Long may we all prosper from the tremendous legacy of worldly wisdom and specialized real estate knowledge which he left in the "Arguments" thread.