One of the major reasons to play with the Adventurer Conqueror King System is the late-game stronghold rules. However, certain game mechanics (most notably, the amount of territory a stronghold can control) depend on being able to accurately calculate the GP value of a stronghold, and when it comes to claiming existing dungeons and using them as strongholds as a way of saving money or playing a dwarven class... Well, the costing gets a little tricky, because the only explicitly underground stronghold component in the core rules appears to be 'dungeon corridors.'
This seems like fairly scant information to base dungeon/stronghold pricing on. Is the authors' intended reading of the rules known? It simply doesn't seem to cover the full variety of possible underground structures and chambers in a useful way. What am I missing?