This looks like a publicly accessible link. Can you please change it to an internal one, and add where it is saved? TIA!
Also I would like to respectfully challenge the way you calculate the extra costs. Following this logic the price per square meter would have increased by 400 euro, which is clearly not the case.
But more importantly I would like to back-up @alberto’s approach: your concern about the budget for sustainability has been heard loud and clear, and at the same time, if we want to make progress, we can’t open all topics all at once. It’s on the list, and we will look into it shortly.