As an eBay seller you can let us know about your items on sale for example if you cannot find your items on x-percent. In order for us to directly pull your items on sale via the API, you have to authorize eBay to share these transaction information with us in the next step. You can revoke this authorization anytime under your general preferences in "my eBay". However we do not guarantee that your items will show up on our site nor do we guarantee the correctness of the data on the website.