Moderators wouldn't be the one handling it though. If this was something that would be done in the Shop World, it would be handled by the Admins, which there are significantly fewer of. And it would have to be handled across all three worlds. New shops are added daily. People change their stock all the time. It would be a ton of work and would require staff to dedicate time to maintaining it in addition to a bunch of other stuff they already have to do.