Add Units and Suffix/Prefix to a Scorecard (Aha! Score)

In creating the metric inputs you can add the units and a prefix eg. £

But when you create a Scorecard itself (which I do to work out number of Resource (Slider) * Days (Slider) * Cost (Fixed per Resource) the output is in £/$ but the scorecard is simple a number. 

When I pivot the cost (of dev form the scorecard) vs projected revenue (input manually) the revenue shows nicely in £ but the cost is a number (even without , separator). Functional, but looks poor