He may do his research and her body looks like a ten and her reviews state she is a 10, but because she blurs her face he is unable to determine she is really a 5. And if he is a face man, that's a problem.
There is no way to do research in this aspect, so if he opens the door and she is not attractive, do you really think he should have to pay a departure fee? It is not about false advertisement or beauty being in the eye of the beholder, but reviewers giving ladies 10's when most likely they do not even feel the women are actually 10's. However, they are scared to submit a lower rating. It sets other men up to fail, IMO.