There was a woman's beauty supply store across the street from a place I used to work. Never anyone there except once a month there would be a steady stream of very expensive cars all driven by men....maybe they were buying for their wives.
They could be business owners coming in to get supplies. I know tons of people who work in the industry and "men with expensive cars" describes many of them. One runs her own beauty supply shop and mostly sells to other businesses so it doesn't appear she gets the foot traffic of a typical retail store even though she's selling high volume.