Amazon announced a new service called, Glacier Deep Archive, which will start up in 2019. The aim of this service is to replace conventional tape backups, thus the product is meant for super cold storage that would only be retrieved in case of emergency.
I bet they had a ton of extra space after kicking everyone off of unlimited cloud drive accounts and needed a new product to fill the gap. Pure speculation, of course. Decent idea nonetheless.
Bandwidth will likely be expensive since it’s only meant for emergency backups. I don’t believe that tape is the actual storage medium, but you can probably expect extremely slow speeds when downloading the files since they aren’t meant for hot storage.
Definitely not meant for a hobbyist, but for corps this seems like an attractive and cheap service