My bestie is a lone operator in the 'agricultural' engineering game, except when he turns up dragging me out on a job.. When customers want to stand watching him working, he says "£60 to do the job; £100 to watch me." Never stops shaping sheet or welding when a customer turns up. I leave myself well in credit with him, and send him lots of work. No-one gets his number, as a rule, but he can count on me anytime to head up into the hills. The reaction some customers get is about them more than the business.