Google Storage

from https://code.google.com/apis/storage/docs/overview.html#pricing

Amazon S3

from http://aws.amazon.com/s3/

Storage—$0.17/GB/month

data in: $0.10/GB

data out:

$0.15/GB for Americas and EMEA

$0.30/GB for Asia-Pacific

Requests

PUT, POST, LIST—$0.01 per 1,000 requests

GET, HEAD—$0.01 per 10,000 requests

High durability:

$0.150 per GB

Low durability:

$0.100 per GB

data in:

Free until November 1st, 2010**

data out:

First 1 GB / month: free

next 10Tb / month: $0.190 per GB

PUT, COPY, POST, or LIST: $0.01 per 1,000 Requests

GET and All Other Requests: $0.01 per 10,000 Requests

So based on that, seems like Google did a copy/paste of the S3 price list, but made the actual storage more expensive. Its not clear from Google if the storage has a durability SLA.

Looks like S3 is the better bet based upon pricing.