A store's first order should not be Net 30, they are usually used to paying on delivery often by C..D. But most other future orders will require terms, so get used to knowing your buyers and building relationships with them...it will ease your mind if you do. The next thing is to print a credit application to have the store buyer fill out and you keep on file. Net 30 is when you deliver your goods to the store and they get a 30 day credit window to pay you for the goods. That business owner decided to name his business something that would get it listed at the top, in order to cash in on all the people who choose one of the top listed plumbing businesses in the phone book.