Well, you can ask yourself what is "real value". In fact, more likely than not, it's just some imaginary stuff you ascribe value to, just like "prestige".
Real value is something that can pay your bills :)
Sometimes prestige does it, too, e.g. when you're hired to a better position on a next job, due to your prestigious title, a part in a famous project, etc.
Sometimes prestige does it, too, e.g. when you're hired to a better position on a next job, due to your prestigious title, a part in a famous project, etc.