I don’t see why not. Instead of Price, you could treat it as a quantity. The way I have it designed, I’m using a filter to hide the item once it’s purchased, so it wouldn’t show up again once it’s picked up. I would image that the Balance for a user could be changed to the name of an item and could probably be split up into multiple items. This would contain the total quantity for an item. The formula would just need to be modified for each item to find a matching item and the current owner in the Items sheet to accumulate the total. Anything is possible.