Neighbors of ours have a cabin in the north coast mountains (Dominican Republic, near Altamira, in Puerto Plata province) with some farmland. They want a house sitter for a few months - you pay utilities, wifi and water (truck deliveries). The house will be for sale thereafter in the fall for US$35k. I know that does not sound off-grid, but it is close. Power is not so reliable, and the water system is self-contained. A person considering getting away from it all could learn a lot living in a gritty rural place like this. There are a few gringos in the area, but most of the population speaks only Spanish. The farmland has limes and avocados - not yet producing. These are two of the most common crops in the area, so when avocados start to ripen in another couple of months, you will have all you can eat for almost free!