There are a lot of land scams online and West Texas has plenty of them. You can buy loads of cheap land in Hudspeth County and there's no mention anywhere in the marketing materials that said land used to be the dumping site of New Jersey sewage trains. Basically there is no land worth a damn that needs to be marketed online. If it was good for anything it would change hands immediately.
you're also very very alone in that area. If you're off the main roads and get hurt or bit by something, even if you manage to get through to 911 dispatch, its going to be a while. And that's assuming they find you.
there is at least one county out there that doesn't have ANY building codes...you can build whatever you want
forewarned, it is expensive to get anything done in the middle of nowhere