So Mr Barista, how much margin are you making on my cafe latte?

What did the Myer sales assistant say when you asked her what the wholesale price was of the designer pair of trousers you were thinking of buying?

How about your dentist; what did he say when you politely enquired   what hourly rate he was charging himself out at?

Maybe it was during your most recent meal at your local Italian restaurant, where you press…