Rate ² :: Rate is an amount of transportation-related charges, billed to a specific shipment, where applicable. Rates are offered to a qualified and eligible Users as part of a Shipping Profile. Rates are subject to change at any time based on multiple factors, including but not limited to changes in customer Credit Balance, non-payment, changes in revenue, cash and other financial and non-financial conditions and factors. Additional charges do apply. Check the service guide for a complete list of the surcharges and details on each.