At $10 a month to store 1TB on Glacier, you'll surpass that cost in a year.
Does those $10 include the servant which does the backup and drives the hard-disk off-site for you automatically, as would be the equivalent of an automated job with s3cmd/rsync (and whatever you have for arq and glacier)?
If not so, you are missing something crucial in your equation.
I think it's assumed in the Glacier use-case at hand that the data is not time-critical. The continued-existence of 1TB of old photos is important, not immediate access to it after my house burns down.
The backup time and storage for my use-case is mostly one-off. I don't have a need to rsync a folder containing photos from 2008 because I will not be making critical updates to that folder.
Does those $10 include the servant which does the backup and drives the hard-disk off-site for you automatically, as would be the equivalent of an automated job with s3cmd/rsync (and whatever you have for arq and glacier)?
If not so, you are missing something crucial in your equation.