Add region for aplications with volume mounted.

Questions / Help
1

I have two questions related to regions:

  1. I’m getting the following error when trying to add another region in an application with a volume mounted.
$ fly regions add sea
Error App '<NAME>'' uses volumes to control regions. Add or remove volumes to change region placement.

I’m not sure how to proceed, is it not possible to add region for this application?

  1. If an application is deployed on 2 region, will it cost twice the amount? or are regions redundancy comes for free?

Thank you