A simple solution is that make the FC can only buy one land lot and can only own one land lot at a time until put up for sale, then if that land is sold they can buy another one. This way you don't have to make the price highly insane making it out of reach for everyone. Why on earth would you make it FC can buy multiple land then implemented an insane price to make it not possible? You are just making things more complicated then it should and make promoting RMT.