Nice one AZ, it will most certainly be interesting to see how it plays out!

Right now, on the PP Based Pricing Metric, Stone should be trading at 10:1 Grain but is actually trading at 20:1 Grain!

Iron is close to the PP Metric but as you said and I agree - will the 4:1, 10:1 and 40:1 Ratios be a good measurement? Or will difficulty in harvesting add a Premium to the Resources?

We shall see!