I lived in a shed on my parents farm for more than a year. it definitely wasn't anything like the ones they are selling here: It was incredibly hot in summer and the pipes froze once in winter, I did what I could to insulate it and enjoyed it very much. (After I air-conditioned it).

The total cost of construction for my shed was R50,000 (~$6 145.35) complete with bathroom and kitchen. I now live in a 140 square meter (2x bed, 2x bath, loft) apartment which almost costs as much as these sheds.