The phrase "to fix a fee" means to establish or determine an amount that will be charged for something. It can refer to setting a price, rate, or charge for a service, product, or activity. The term comes from the practice in England of setting legal fees by agreement between lawyers and their clients, rather than having them determined by a court. Today, it is commonly used in various contexts such as negotiating prices with vendors, setting rates for professional services, or determining charges for repairs.