We listed our house for 4 percent several years ago. 3% to the selling agent, 1 % to the listing agent. This was a mother and son team. They were willing to list our house and hoped that we would use them to buy our next house. They would have actually listed it for 3.5% if we bought a house using them.
It got uncomfortable when we were ready to buy because we were moving about 70 miles away. They didn't know anything about the area. (I did, because we were moving back to the town I grew up in.) They did pull up houses for us, but they were not what we were looking for at all. I told them areas of town, price range etc... They kept trying to push us to get a house similar in price to the one we sold. We wanted one that was about 100K less. Plus, they kept pulling up houses in the right town, but the wrong school district. It was kind of like they would throw it together at the last minute and not bother to look at what we had asked for.
Finally, we told them that we were going to use a local realtor. There were several angry phone calls about how we were making them lose money. I felt bad about that, but in our contract, we agreed to list our house at 4%, and if they sold us another house, it would be 3.5%. They were only ever our listing agent, never our buyer's agent.
I kind of got the feeling that they thought that we somehow tricked them, which is just ridiculous. If they had done what we asked, we would have probably used them, in spite of the fact that they didn't know the area.
That was our only experience in selling with a realtor. Next time, we will go with a local person, and get recommendations. This experience was too stressful for me. At the time, we needed that extra 2%, now I would pay it just to get a "full-service" realtor who really listened to me!