Ms Bocra said that in the Big Apple, a penalty of $US268 (around $A358) is charged for every metric ton (tonne) of CO2e above the limit.
— Read on thefifthestate.com.au/urbanism/planning/what-australian-cities-can-learn-from-new-york-citys-building-emissions-laws/

$268 represents cost of not just reduced emissions but cost of extreme weather, damage to human health and more, real cost!