I think this is really situational. In a store, I’d say you should pay the list price, but it’s more nuanced with other types of businesses.

Of course. If my friend is a hairdresser and makes my hair, he does not run the risk that I come back the next day and make a huge public drama because it all went bad.

So there is less risk for him. That makes it cheaper.

(I would make the drama at his home)