The man in the black shirt is showing the man in the orange shirt something that he has for sale.
A retail store worker shows a customer the latest designer wear.
Just because the man in the black shirt is showing the man in the orange shirt something that he has for sale doesn't mean that the man in the black shirt is a retail store worker or the guy in the orange shirt is a customer.
We have no idea if he is showing him the latest designer wear, he could be showing him anything.
Just because a man is showing something he has for sale he does not have to be a retail store worker.  Just because a man is being shown something it does not mean he is a customer.  Just because a man is showing another man something it does not mean it is the latest designer wear.