Prior to hiring the services of any private investigator to assist you in investigating a particular matter, it’s essential to get to know the amount the investigator charges for his/her services. There are numerous factors which influence the cost of a private investigator in spite of the method they use to charge their clients. For instance, there are investigators who charge an hourly basis and there are those who demand a retainer and there are also those who charge based on the type of service. Prior to hiring a private investigator, it is important to make sure you are familiar with their pricing as well as expectations. Ensure the investigator you hire is someone who you can build your trust on.