If the stuff is free, you can almost certainly attain a profit off of whatever you pull down.
Even a rusted coin door, missing the wires, rejectors, etc.. can be valuable to someone. Metal can be stripped,
de-rusted, bondo-repaired, repainted... and missing parts, found and swapped over, for much cheaper than a new assembly.
Some of the parts / doors may be rare. Meaning, someone with that cab, whos door/part is kicked in badly, missing completely, or has the wrong door/part installed.. would love to get hold of the original... even in poor condition.
Even things like Marquee holders, are of value to cabinet builders. A simply c-channel at a hardware store can cost like $12,
and still need cutting and painting regardless.
Get two people on it, with some power tools, and strip parts like madmen. Decent cabs, leave whole, and try to see what value it may be to local cab builders. Mild cabinet problems can be fixed with bondo, paint, etc. Even a sidepanel replacement may be easier and cheaper, than assembly of an entire new cabinet.