Would you not include a rental charge for your own land as part of the costs? The value of the land has little to do with production but the rental value does, its like not including a labour charge and comparing your cost to a contractorIn which way do you look at margins though? Cheapest milk you'll make is cut the cow numbers in half and let them loose. If you own the land.
But if you have repayments to make they'd don't shrink so you have to have that amount of money in the bank at a certain time.
I think we have a certain amount of money must come off the land every year and we have to reach that in whatever way is necessary. Regardless of margins.