You are correct. You can't yet buy VS2012 Pro unless you have an MSDN sub. You can start with Express, then just install Pro later.

>My last Pro license is for VS 2005. I don't think I can even buy - yet - Pro upgrade for VS 2012. And I am starting a new project (ASP.NET) and thought that I should use the latest version of VS. Mainly I want to apply to this project what I am learning of HTML5.
>Thank you.