When we generate an invoice, we can see the number of units for any given billable metric.

But we cannot see the "unit price" of the metric.

Some of our customers are a bit frustrated not being able to check the final billable amount on an invoice without looking at their contract or their detailed plan to get the unit price associated with a metric.

It could be interesting to display this "unit price" next to the number of units (even if "unit price" is not always easy to calculate for instance for a "graduated" metric).