Google Storage

Google Storage for Developers - an Amazon S3 equivalent - has been announced .

You can register for an appointment.

Rates:

Storage - $ 0.17 / gigabyte / month
Upload - $ 0.10 / gigabyte
Download - $ 0.15 / gigabyte for America and Europe
PUT, POST, LIST - $ 0.01 per 1,000 requests
GET, HEAD - $ 0.01 per 10,000 requests

During beta - 100 gigabytes of storage and 300 gigabyte transfer free.