The most underrated scene in the Wizard of Oz is the hallway leading up to the audience with the great and powerful one.
One of the reasons that Oz is seen as being particularly great and powerful is that it's just so much trouble to get to see him–and that hallway is the perfect metaphor.
I still remember visiting a talent agency in Hollywood a decade ago. The lobby was far bigger than most people's homes, and it was totally empty, a long, long walk from the automatically opened door to the Centurion at the desk.
Contrast this with a doctor's office I recently visited. He was sharing space with a chiropractor, and the office was in the back of a grade B strip mall. Inside the waiting room were dozens of mimeographed signs (I didn't even think you could mimeograph stuff any more) offering weight loss schemes and warnings about what sorts of payment weren't accepted, and how it needed to be proffered immediately.
By all means, your work better be good, not a fraud, something worth paying for. But if the (metaphorical) hallway is a let down, it's an uphill battle to gain the confidence, trust and enthusiasm of your customers.