There is no specific pricing model for SOP writing services as it depends on various factors such as the complexity of the task, the industry, the length of the SOP, and the level of expertise required. However, SOP writing services can be offered by professional writers, editors, or consultants who typically charge by the hour or by the project. The cost can range from a few hundred dollars to thousands of dollars, depending on the scope and requirements of the project. It is recommended that you research and compare prices of different SOP writing services and choose the one that suits your needs and budget. It is important to ensure that you select a reputable and experienced SOP Help who can deliver high-quality work that meets your requirements.