The video description explains how much land was bought and a vague sense of what is planned for it:
Burning Man Project has purchased the Fly Ranch property, 3,800 acres of land located twenty-one miles north of Gerlach in Washoe County, Nevada. The site opens the door to new possibilities, new cultural experiments, and year-round art and innovation projects on a scale never before envisioned. And like Black Rock City, Fly Ranch will be a collaborative endeavor requiring a vast array of skills, ideas, and contributions.