In residential accounts, they will not set up 2 modems on the same account.
It’s basically gonna be set up like Address - Garage or MDM 2 and they will need to pay the full price for service to the garage like it’s a seperate household.
Why do you want to run another modem in the garage when you have wireless? Is it too far away for the wireless to be picked up?
Yeah unfortunately, they will need to pay full price for internet service just in the garage.
Maybe you can call and see if they can do a deal on it, but I’m really not sure. Your other option may be a range extender, but even they don’t like other frequencies such as a security system and whatnot.