Like most shops, it's based on a case by case basis. The reason I like his shop so much and am looking to help him promote it is the fact that he refunded me money on an engine I bought that I told him and showed him was faulty. He didn't even ask for the engine back, he just wore it.
If that isn't support and service then I don't know what is. Again, this is my experience, and this is why I have no trouble recommending him to anyone.
As for supporting local shops, he is happy to wholesale any of his items to a hobby shop near you, so you can have it either way.