CUDs do not have cost labels applied which means that if you label all resources for env / product, you cannot compare the daily cost of labeled workloads because CUDs apply differently each day.
Feature Request:
Have a way to compare labeled workloads cost when CUDs are applied. If we can provide a BQ Query to solve this in the meantime it will be great as a stopgap. By the way, it is also a problem for the budget feature if you budget using labels.