One advantage these might have over Tile is if by default iPhones notify the service when they are near an AirTag. This could be helpful with a lost item, as there are a lot more iPhones out there than Tile users.
So if you mark an item/AirTag as lost and a stranger's iPhone enters within the AirTag's range, you will get a notification and GPS location. Having the huge iPhone base searching for your item would make AirTags worth the extra cost.
So if you mark an item/AirTag as lost and a stranger's iPhone enters within the AirTag's range, you will get a notification and GPS location. Having the huge iPhone base searching for your item would make AirTags worth the extra cost.