This may be hard to do after years of retail experience, but you can’t judge a book by its cover or a customer by their clothes. When you predetermine what a customer knows or wants by the way they dress you will often miss out on hearing what they ask for. When we do that to try to decide who is worth your best sales efforts or who can afford to buy certain items, we’re oftentimes wrong. Let the customer tell you what they want and what they can afford. Leave the judging for reality TV shows.