there's already an address alias system that things like Mercari (think Japanese eBay) has.

You buy something from somebody, they get a QR code and use that to get a delivery label. Delivery label doesn't have your address on it, only the delivery company knows where it's going.

Obviously it doesn't prevent something like "there's an airtag in the box" but it does prevent you having to tell the person selling you a used copy of Resident Evil 5 where you live.