The 6% realtor fee

When a home is sold, the realtors typically get 6% of the sale price. For a 1 million dollar home, that's $60,000. Why so much? I think it has to do with the value of the human touch for large, infrequent decisions. A homeowner might only buy and sell a few homes in her entire life, and if she screws it up she could be leaving a lot of money on the table, or even worse, could end up with a home that she doesn't want. The realtor can make the sale on an emotional level, something that's hard to automate.

I see startups like that add technology like transparent pricing. This is great, however I don't believe that will eliminate the realtor or fee. 

On the other hand, what if there was a trial period and after moving into a new home where you could back out if you found out something you didn't like? This could fit well with the model where they buy and sell the homes, turning a two sided market into two one sided markets. This is a startup to watch.