Junk fees often add 50% – 100% to the cost of a car rental. The good news is that many of them are specific to airport car rentals, and in particular to rentals you pick up at the airport.
You can avoid most of them by taking an Uber or cab (or have someone pick you up and drive you) to a car rental location away from the airport, and you can still return the car to the airport if you wish. For a one day rental this often doesn’t make sense, but for a longer rental it certainly can.