Laeserin on Nostr: It would only be zero if you only use it like a cache. I think you can also use it as ...

It would only be zero if you only use it like a cache. I think you can also use it as a personal relay and read/write/broadcast from it to your other relays. That wouldn't save you bandwidth (I don't think), but it would probably speed your client up a lot, make it easier to use multiple clients (only one relay to install) and would work as a backup.