CheckPermission provides Amazon sellers with an instant, on-page notification indicating whether or not they are authorized to sell any physical Amazon product, including books. The software lets you know all the conditions in which you can sell an item, such as new or collectible or used. It also indicates whether a product has hazmat status. It works with both Windows and Macs and works on any Amazon product page. You can use it alone or it can also integrate with InventoryLab. You must be logged into your Amazon account for the tool to work.

There is also a CheckPermission Bulk Check service that allows you to check up to 1000 ASINs or UPCs an hour. This can be very useful with liquidation lots or lists from wholesale suppliers.