Microsoft announced pricing for Azure.
Today, during the Microsoft Worldwide Partner Conference 2009 Microsoft announced the business and partner model for the Windows Azure platform including service level agreements and support programs.
Windows Azure, SQL Azure and .NET Services will be commercially available at the Professional Developer Conference 2009 and Microsoft hopes you will continue building on the Community Technology Preview (CTP) at no cost today.
Upon commercial availability Microsoft will offer Windows Azure through a consumption-based pricing model, allowing partners and customers to pay only for the services that they consume.
Windows Azure:
Compute @ $0.12 / hour
Storage @ $0.15 / GB stored
Storage Transactions @ $0.01 / 10K
SQL Azure:
Web Edition – Up to 1 GB relational database @ $9.99
Business Edition – Up to 10 GB relational database @ $99.99
.NET Services:
Messages @ $0.15/100K message operations , including Service Bus messages and Access Control tokens
Bandwidth across all three services will be charged at $0.10 in / $0.15 out / GB
You can read more here: http://blogs.msdn.com/windowsazure/archive/2009/07/14/confirming-commercial-availability-and-announcing-business-model.aspx
Brent Ozar also has a nice post here: http://www.brentozar.com/archive/2009/07/sql-azure-pricing-10-for-1gb-100-for-10gb/
So how long before you move to the cloud?

Denis has been working with SQL Server since version 6.5. Although he worked as an ASP/JSP/ColdFusion developer before the dot com bust, he has been working exclusively as a database developer/architect since 2002. In addition to English, Denis is also fluent in Croatian and Dutch, but he can curse in many other languages and dialects (just ask the SQL optimizer) He lives in Princeton, NJ with his wife and three kids.