The cost of SOP (Statement of Purpose) writing services can vary depending on several factors. The price typically depends on the complexity and length of the SOP, the level of customization required, the experience and expertise of the SOP writer or service provider, and any additional services or revisions included in the package. On average, professional SOP writing services may range from $50 to $200 or more, depending on the aforementioned factors. It's essential to research and compare different service providers, considering their reputation, customer reviews, and the quality of their previous work. Keep in mind that investing in a well-written SOP can significantly increase your chances of securing admission or obtaining a desired opportunity.