Last place I lived had 2 bike shops. One guy just sold bikes, he did some repairs but only on bikes he sold. When you spoke to people he spoke down to them. He only liked what he sold and always talked shit about the brands he didnt sell. Just an all around asshole. I never saw more that a few people ever in his shop.
The other guy sold bikes, and did repairs on anything. He was very quiet and listened to his customers intently and then interjected his thoughts. He loved bikes, the older the better. Roll in a vintage Schwinn and he would swoon. Roll in a custom hand made racer dripping with vintage Campy and he would drop everything and drool. Walls adorned with his old racing jerseys and event T shirts.
If he didnt have what you wanted he would order it. If it wasn't something he sold, order it yourself ship to him and he would set it up. He had a very large inventory of parts, accessories, clothing, tires, ect. He even had a museum of vintage bikes of all kinds.
Saturday you couldn't get in the door.