thats what we're talking about
I wouldn't hold out much hope for the "almost" applying in your case. The $500 drop fee is the charge for renting one way, and it pretty typical for a rental of this distance.
When I say almost always, I mean there are just a few exceptions where you won't be charged a drop off fee. If you are traveling a short distance between popular destinations, between LA and San Francisco for example, you might not be charged an additional fee. Once and a while a company will offer sales to enourage one way rentals if they have an excess in a specific area, for example, occationally you'll see deals on one way car rentals from Florida in the spring, if you take the car out of the state. While you can certainly look around and try to find a deal, I think its unlikely you'll find that a situation like that will apply in your case.