Thanks for the feedback, this extension does not access any of the user data. In fact it does not even run until the user loads an eBay link, in which case it gets a copy of the link to determine whether it is an eBay search or not. Once the eBay search has been updated, this extension goes back to sleep mode.

The source code is publicly available at https://github.com/mountassir/ebay-search-extention