One of the first things you probably wonder when hiring a private investigator (PI) is, "How much will it cost?" Although costs vary significantly, effective budgeting and setting expectations rely on understanding how pricing works. Private investigative firms in the UK usually charge between £300 and £1,000 a day, although some cases may run outside this range. This tutorial dissects the reasons behind fee variations, what to expect from various case types, and how to select an investigator depending on both cost and quality.