Your old saying is only believed by a fool. Read my other post. We had zero problems selling two ourselves.
Well good for you.
Naturally, I regretted not knowing about or buying his place instead. I have no idea where he advertised it and hadn't been aware it was for sale. But the price I paid was actually comparable to what other places were going in that neighborhood and what they went for in the building over the coming years. And I sold my place years later for a nice profit.
This guy, on the other hand, got ripped off. He saved his 3% on the agent but lost maybe 50% of the price he could have gotten because he went it alone. I felt very bad for him.