I work in a shop. I don't push helmets. If people ask, I tell them what I know: what helmets can do, what they can't. What is generally assumed but not actually true. That they are only the very last increment where safety is concerned. That skipping a helmet and paying for a bike safety class will do more to keep them safe than a helmet.

However, most people don't ask, and I certainly don't go out of my way to not sell them a helmet they wish to purchase, even if it is for the wrong reasons.