Cool post, but there are 2 significant factors not considered. 50k DEC per plot is only required if you do not have a Runi and you are using 5 fully leveled cards to work the plot. There are several thousand Runi ready to work land and also many plots that will not be using fully leveled cards.
So at first glance it could look like someone is not ready at all, but in reality they might be fully prepared.