I use SLS printer service and the way they charge is per cubic cm as the powder is very expensive. They take the STL models, put them through a "nesting software" which basically packs all 3d files as close as it can to get the smallest possible bounding box. In this way the user pays for the minimum possible volume. I believe all SLS services charge in this way.
If Fusion had a command which could do that, users could adjust models before hand to know exactly how much they would pay, and have maximum control over the printing (costs). I am attaching an image I have found online which shows a screenshot of one of these nesting procedures