This weekend I had someone email me asking me to blog about where to find the usage info used for billing because they were having a hard time finding it and figured others were having difficulty as well.
Coincidentally, I saw an internal thread this morning where someone was asking the very same question so... Erik, I believe you are correct, a post will probably be helpful for folks.
To find your usage info, go to:
https://mocp.microsoftonline.com (From the Developer Portal, you can click on the "Billing" link in the upper right hand corner.
I'm going to walk through getting to the actual bill because I know some people get this far but get lost in some of these pages.
Choose your country / region and hit continue.
Then click “Sign in now” or “Sign in” and sign in.
Followed by “View my bills”, then click on “View Online Bill/Invoice”
From the “Online Bill” page you can select the Billing Period and click on one of the Usage Charge links in the middle of the page. This will bring you to a page similar to the following:
Essentially, everything you want to know about your bill will be there. Note that this doesn’t update in real time and that there is a lag.
Also note that you need to delete your deployment to stop the clock on compute hours.
[Update 2/11/2010 - The intent of this post was to help you get to the right place where you can explore around. If you are looking for more information on Data Transfer usage, SQL Azure and other usage charge pages, please see this post by Roger Jennings for more details.]
Hope this helps.