Thats honestly not all that hard to do...
Tons of land available out west.. in very remote places.. for very low cost..
Within a 20 miles radius of the property I've got in Southern Colorado.. you can pick up 5-20 acre plots at $600-$800 an acre, all day long..
Farming would be tough.. high elevation.. cold winters.. etc.. but there are some crops that grow out there.. and a few farmers in the area..
But animals arent a problem.. tons of game if you like to hunt.. and lots of people in the general vicinity of our place have sheep, goats, chickens, cattle, etc..
When I want to "leave it all behind" or escape for a week or so.. thats where I head.. cell phone reception is spotty at best.. no internet.. no cable TV.. etc.. just wide open space, beautiful views, lots of quiet.. and me, the wife, and the dogs running around.. I dont see another human being unless I want to (go into town to pick up supplies, or to eat a meal at a restaurant, etc..)..
I love it out there..
And my total investment in the place (to include building a small cabin, having a road/driveway put in, having dirt work done to be able to build the cabin, and then putting some basic furniture like beds, a table, and a chest of drawers, etc.. in the cabin).. has been less than what it would cost to buy a decent used pick up truck..