From the Inventory Management and Add Inventory page, it would be most helpful to see more detail when selecting a specific inventoried item. Currently you see a grayed out box with the quantity only. It would be a benefit to instantly see, or at least hover over, the on-hand item and additional details including the quantity, serial number, date added, physical location, wholesale cost and retail price, would appear.
By having this information readily available at the "Add Inventory" screen, it would help to diminish entry errors, inaccurate deletions, observing inventory balances, and instant availability for off-site arrangements.
In addition on the Inventory Management page, it would be of great benefit to see the retail price on the initial page.