>>6435480NECA wise, the good ones are cherno, crimson, and ultimate gipsy (the made roughly fifty different gipsy dangers, skip everything else but the ultimate). Horizon brave and romeo blue are also very nice if you're down for sir-not-appearing-in-this-film designs. Ultimate striker is nice overall, but has wobbly hips and will 100% need a stand. Their kaiju were mostly bricks, though otachi was pretty nice.
I have no idea about the aftermarket as I've long since gotten what I was looking for, but they mostly retailed for 20-25. Don't go paying double or anything like that, except maybe for cherno who was amazing. And it looks like the new Bandai stuff is gonna be bluefin, so feel free to go with amazon if you're down for getting it a little later.