A piece of airspace is indeed cheaper than land, but not much cheaper, because the already highly advanced anti-gravity technology has made buildings like sky cities and floating islands a reality.
In almost all major cities, there are such enormous structures, which are the domains of the "upper class" or places of "luxury consumption" of this era.
The cost of purchasing airspace, added to the price of building a floating island, is much more expensive than buying a piece of land and a skyscraper.
Chen Gu took a deep breath: those bounty hunters like Milgray have really made a lot of money.
And a dormant super life form... can indeed fetch an excellent price.
