Цены на Windows Azure

Windows Azure:

• Compute = $0.12 / hour
• Storage = $0.15 / GB stored / month
• Storage Transactions = $0.01 / 10K
• Bandwidth = $0.10 in / $0.15 out / GB

SQL Azure (прежнее название SQL Services):

• Web Edition – Up to 1 GB relational database = $9.99 / month
• Business Edition – Up to 10 GB relational database = $99.99 / month
• Bandwidth = $0.10 in / $0.15 out / GB

.Net Services:

• Messages = $0.15/100K message operations , including Service Bus messages and Access Control tokens
• Bandwidth = $0.10 in / $0.15 out / GB

Вполне нормальные цены. Подробнее здесь.
Описание T-SQL для SQL Azure здесь.