By way of example, let's assume that you are a sales professional working at the local office-supply store. Let's also assume that you just landed one of the larger companies in the town as your new customer. this new account will place its first order and then eventually use up the stationery and office supplies that they purchased. If you did good job servicing the account during the first sale, the buyer will place a second order when goods are needed. that second purchase will require little work from you, especially when you compare it to the work required to get the first order. the buyer may even place the order with a sales assistant in your department or perhaps on the company's Web site or portal