What are the advantages of good etiquette in business?

Honor, trust, and respect are good qualities of salesmanship to establish a solid and happy customer base. As to etiquette...don't be touchy, keep your conversations respectful to your listeners, and never dress down below business casual in the office or to meet clients Also being punctual for meetings shows you respect others time. Always call ahead if you are to be late. It shows consideration and respect and gives the other person the opportunity to reschedule if needed. These all seem like little things but not abiding by them in business can give a very bad impression...and you know what they say about first impressions...sometimes it's the only one you get.