The realtor that wanted to sell my sisters house wanted 2.5% (multiple that by two because you need to pay the buyers realtor as well) on a almost 300k sale for putting the house on MLS, doing a few open houses and that's about it. Seeing that most sales are done via other realtors (ie pick up the phone, you're done).. Now put that time into actual man hours (Like you and I put into our jobs) and that pay rate is absolutely insane!
She ended up selling it privately, made out much better.