The Windows Azure team just released on their blog a pricing Calculator, here is the article.
The Windows Azure platform gives you the flexibility to pick services and offers based on your business needs. To help you select the right Windows Azure platform offer and estimate your monthly costs, we’ve just launched a new pricing calculator.
The pricing calculator lets you pick compute, database, storage, bandwidth, CDN and Service Bus capacity based on your needs. Along with predicting your expected monthly costs, the pricing calculator then recommends the most cost effective offer for you to purchase Windows Azure platform services. You can access the pricing calculator here: http://www.microsoft.com/windowsazure/pricing_calculator.
We would love to hear from you. Please do let us know if the pricing calculator helps you in picking the right offer, and what we could do to improve it further. You can submit your valued feedback here.
Aashish Dhamdhere, Senior Product Manager, Windows Azure