Yeah, so that was instructive but a waste of time. For future reference: the GA floor standing only tickets are soundcheck, and have a fixed price around $400 to $500 and come with the usuall soundcheck perks.
The fan presale, fixed-price, 'cheap' tickets are in back half of all the sections, or in nosebleeds. These run from $64 to $122
The first four rows of every section, at least, seem to be "official platinum" - aka dynamic pricing - and the prices are WILD. They run the gamut from $250 to $999.
Just insanity.
Also, looks like Washington DC is not a popular venue - still lots available there after an hour