Quite the understatement. Harvard/Yale/Stanford don't do merit-aid scholarships so you would have to be super poor to get some financial aid and even then isn't likely to be a full-ride.
Just don't forget those fee waivers are for the school's application fees and not the dark lords' application fees... Getting a fee waiver from them is much more difficult...
You should also check their websites to see if you fall in any of their fee waiver categories (e.g.- TFA, military, etc.) or try scoring some at law school fairs or LSAC forums.
if you file a complaint you have the option to cancel your score (either way it MAY be delayed) and if you decide to cancel you will most likely be given a waiver to retake the LSAT for free (can't remember if you still get a count towards your 3)