I would call around to several of the large companies in your area, but typically 6% is the norm. There are some ala carte brokers but you should only use these if you are knowledgable in the process that you will take on yourself. In this economy it is harder to sell so agents really are putting in the work. During the boom they were selling within days and that was when owners had the leverage to lower commissions.

commission is negotiable 4-6% normal
6% is $30,000 – for that kind of money do you think you could sell it yourself

idk answer mine?

6% is normal. Try negotiating it down. Find another realtor willing to lower the %