For $8000 if you tried to live on it completely self-sufficient you'd be dead in less than 3 days.
Much like my own home state Utah there is land just as cheap, and it is so cheap precisely because it's only value is grazing cattle every few years. There is little to no water, the climate is adverse to growing anything but desert grasses. You couldn't subsistence farm this land with all the money in the world to get you started. In other words, it's cheap because it has little value just as the market shows.
I ran into a fool like you many years ago that claimed there is no population limits, after all look at all that open land out there in the desert. Are you completely ignorant of what it takes survive and farm?