Any list price that excludes additional fees should be shown as "Base price" or, better yet, explicitly list what types of additional fees have yet to be added

Any list price that excludes additional fees should be shown as "Base price" or, better yet, explicitly list what types of additional fees have yet to be added to make up the final price. For variable fees, you could show a range of prices to show the minimum and maximum possible, or show the base price with an approximate or estimated additional fee. There are LOTS of ways to be open and clear with the customer about these things without being deceptive.