Small Scale Military Headquarters

If I were to make them. what size, what terrain and what would people be willing to pay?
obviously just a square base on thick wood with soft spcers underneath to keep from scratching furniture

i suppose it would depend on quality and size to determine whether or not people would buy it and on the size deal, im not very knowledgeable at that

here's a hetzer dio for a 1:32. I guess they would be this detailed