OT: Selling a house... Are all fee's the same?

[spacescape]

We are in the process of cleaning out my late mother in laws house. We will most likely run it through a Realtor but we are a little shocked on what they get 6% + a few fees. Which, if we sell the house for $150,000 will amount to about $9,000 - $10,000.

We've only contacted a couple of Realtors and are wondering if all these fees are the same unless we sell it by owner. Anyone know?

Thanks!
Bill