The biggest difference is that Glacier is still a "suspend/resume" type of accesss. However, if you just want to compare pricin, it'll depend on your access pattern and object sizes.
Retrieval in all Google Cloud Storage is instant and for Coldline is $.05/GB (and Nearline $.01/GB). If you value that instant access, it seems
the closest you'd get with the updates to Glacier is via the Expedited retrieval ($.03/GB and $.01/"request" which is per "Archive" in Glacier). Then you have to decide how much throughput you want to guarantee at $100/month for each 150MB/s. (It's naturally unclear since it was just announced what kind of best-effort throughput we're talking about without the provisioned capacity).
If you're never going to touch the bytes, and each Archive is big enough to make the 40 KB of metadata negligible then the new $.004/GB/month is a nice win over Coldline's $.007. Somewhere in between and one of the bulk/batch retrieval methods might be a better fit for you.
But again, it's still a bit of a challenge to go in and out of Glacier while Coldline (and Nearline and Standard) storage in GCS is a single, uniform API. That's worth a lot to me, and our customers. But if Glacier were a good fit for a problem you have, and you're talking about enough money to make the pain worth it, you should seriously consider it.
Disclosure: I work on Google Cloud, so naturally I'd want you to use GCS ;).
Retrieval in all Google Cloud Storage is instant and for Coldline is $.05/GB (and Nearline $.01/GB). If you value that instant access, it seems the closest you'd get with the updates to Glacier is via the Expedited retrieval ($.03/GB and $.01/"request" which is per "Archive" in Glacier). Then you have to decide how much throughput you want to guarantee at $100/month for each 150MB/s. (It's naturally unclear since it was just announced what kind of best-effort throughput we're talking about without the provisioned capacity).
If you're never going to touch the bytes, and each Archive is big enough to make the 40 KB of metadata negligible then the new $.004/GB/month is a nice win over Coldline's $.007. Somewhere in between and one of the bulk/batch retrieval methods might be a better fit for you.
But again, it's still a bit of a challenge to go in and out of Glacier while Coldline (and Nearline and Standard) storage in GCS is a single, uniform API. That's worth a lot to me, and our customers. But if Glacier were a good fit for a problem you have, and you're talking about enough money to make the pain worth it, you should seriously consider it.
Disclosure: I work on Google Cloud, so naturally I'd want you to use GCS ;).