I had this need and couldn't wait. Tried "Connected Inventory" app for
$10/mo with 7 day trial. It is super easy for kits and bundles and items
that sell by a single item, multiple packs and cases as well to manage
inventory. I'm VERY happy with it. ...
Don't you get this result you are looking for by clearing the drop down
under "service" and clicking the icon for "calc"? Or are you looking for
something automated?
.png%20copy%20(3).png "First time author"){kind=icon}
.png "Super User"){kind=icon}
