Hello there, @GrandpaG, 

Thanks for letting me know that you're using Premier. Yes, @FritzF is correct that the Cost drop-down is only available in the Enterprise versions. 

Since you have sales orders and invoices associated with the item, only the sales price amount would show on the reports. This maybe the reason you're unable to see amounts under the Cost column. 

The cost of the item will appear on any inventory reports if you're buying an item through entering a bill. Please see the screenshot to serve as your visual guide. 

After recording a bill for the item, the cost will now reflect on the reports. You can check out the screenshot below for your visual reference. 

The information above will help achieve your goal, @GrandpaG. 

I'm here anytime you need anything else. Have a wonderful day ahead!