1 Court fees or fines vary widely depending on the charges and jurisdiction, and are not included in the attorney's fees. 2  Depending on the case, fees for investigators or expert witnesses can be anywhere from $2,000-$7,500 or more, and are in addition to the lawyer's fee.weet. Comments (2). The cost of hiring a criminal attorney depends a great deal on the nature and severity of the charges, the complexity of the case, the lawyer's years of experience and the size of the law firm, among other factors.