Martin Fowler presents an example from a ThoughtWorks project where they went in with a fixed bid contract, built trust with the customer, and then moved to a more "flexible charging scheme".
当双方签定了一份固定投标合同（fixed bid contract）后，并逐步建立了信任，继而达成了一个更加灵活的收费方案。
Not only are you creating interest from your potential customer, but you are building trust with them too.
不仅从您的潜在客户创建的兴趣，你建设也与他们的信任。
Products from the market since the popular customer trust and praise.
产品自投放市场以来颇受客户的信赖与好评。
应用推荐