You can register a corporation in Delaware for $109.
The Town of Fenwick Island mentioned here has a population of 400.
It's high noon for this matter, & about time to start repealing corporate rights. The undoing of this travesty should be a federal project. But hopefully Delaware can course correct themselves, and reverse the mega-threat to humanity they have been unleashing. At least states like Hawaii are heading in the opposite direction already, saying corporations are not people and denying them human speech rights. Potentially immortal easy to spawn companies should indeed not be granted full human rights. https://inequality.org/article/hawaii-targets-citizens-unite...
The state of Hawaii was the most recent to be expropriated from its natives at the behest of corporate landlords, so they're probably a bit raw about it.
Doing this at scale might be even cheaper than that. A Delaware Series LLC is $300/year, which then lets you make an unlimited number of independent legal entities. You don't even have to file paperwork with the state to create these new entities, just your own internal bookkeeping. Although presumably you'd have to file paperwork to transfer them a tiny sliver of real estate ($$), register to vote (free), and to actually vote (free).