Well ....
Well ... if a business refuses to just pay a fine of 18 min profit, then it probably *is* a matter of principle. No?
Not saying it's a *good* principle. Just that it's likely not a matter of pure short term money only.
You can't have it both ways - "oh, c'mon, it's 18 min of profit, it's *nothing*, pay up" with one hand, and "you worthless money grubbers who only care about money, that's clearly why you won't pay!" with the other.