Our property owner's association has a website.
http://www.terlinguaranch.com Browse it, for a bit of a feel. Click on the "Property Owner's Website" and then on "For Sale by Owner"
The Solitario country has the least numbers of people wandering through. Call the access "graded jeep trails". Not many deer, but dove, quail, javelina, coyotes, the occasional cougar, and a few Mouflon sheep wander through. Hardly any of us who own land back there worry about property lines; it's a "Code of the West" deal. Don't hunt through somebody's camp; don't throw trash. I think land is up, somewhat; it's moving at around $200 to $250 an acre. $142/year maintenance fee for the road grading.
Land with water and electricity goes for $1,000/ac and up. GhostTown area, $10K or so. The electric company (a co-op) charges $9/foot to extend a line.
Even with grading, 4WD is a Good Thing. Avoids wheelspin and driving a rock through a tread.
Look before signing. Some of the Ranch ain't worth nuthin'. One benefit is that any owner can drive around and sightsee on the 1,100 miles of roads around the 220,000 acres.
My house is in the dead center of this picture, if the URL comes up "righteous":
http://www.google.com/maps?q=terlin...4,-103.590131&spn=0.006672,0.012802&t=k&hl=en
Terlingua Creek just on the west; a neighbor some 300 yards to the east. You can see my road-building efforts.
On a full-moon night I fairly regularly drive home without the headlights on. Boss-lady wife-mate does not approve even one iota.
Art