It's actually not too hard to calculate the storage costs and it's really cheap. I've been using Glacier for backups since the service has been launched. The ca

It's actually not too hard to calculate the storage costs and it's really cheap. I've been using Glacier for backups since the service has been launched. The calculation of the retrieval costs are a bit tricky though. But if you use Glacier for disaster recovery only, it shouldn't matter too much.