Good and bad, who decides?

If we decide what is good or bad, usually based on what we desire or fear, based on what will be pleasurable or not, then as the famous story of the philosopher, who asked a sophisticated lady “would you sleep with me for a million dollars?” and she was thoughtful, then he asked “what about five?” so she retorted “what kind of a woman, do you think I am?!” “well that’s been established, now we are haggling over pricing!”