How would that be so? How do you 'believe' a factual thing like this? I can charge one guy 10$ for a pie in my bakery shop, and the next guy 100$ because I don'

How would that be so? How do you 'believe' a factual thing like this? I can charge one guy 10$ for a pie in my bakery shop, and the next guy 100$ because I don't like his face. There is a narrow set of classes on which it is not allowed to discriminate but all else is fair game. I'm not claiming to know this of all jurisdictions, there may be specific circumstances in which this does not hold, but these are the exceptions.