When you select a collection, the Total Bought will now show the total for that collection. However, the Inventory Value will still just show the main total amount. You can see the collection's amount below, at top right of start of inventory, but if I wanted to take screenshots of the different gains of each collection, now I have to take pic in 2 places, composite in image editor program, etc. Also, it is inconsistent. Why make the Total Bought value change if not the other.
Can maybe even change the label to Collection's Value when a collection is selected, in case the issue of why this was implement this way was because that Inventory's Value meaning was confusing if it showed collection value. Well, if change label, then it can do it all.