Receive Dynamics CRM Online backup file

Is it possible to obtain a copy of an on-demand backup of a Dynamics CRM Online Production environment?  I know I can create an on-demand backup that I can then restore to a Sandbox environment in my instance, but can I obtain a copy of the SQL Server .bak file on a DVD or USB key or via a download link? If so, is there a charge for this service, and is there any limit on how frequently I can do this?