Purchase contracts are agreements regarding the use of certain products and services in a project. The types of purchase contracts and are usually either a fixed price, which can be refunded or time and equipment. Some agreements may include more than one of these payment structures in a single purchase agreement. The provision of services to individuals is subject to different laws (for example. B.dem UK Consumer Credit Act) which have a significant impact on “consumer contracts” and agreements that do not apply to the provision to companies or other formally incorporated entities.