Microsoft has update his Azure Cost Estimation tool now available at http://www.microsoft.com/en-us/download/details.aspx?id=43376
After his installation, you will be able to scan your on premises environment (running either on a physical server or an hypervisor like Hyper V, SCVVM or ESx) and get an estimation cost for the same environment on Azure
As sample, here is a result for an Hyper V 2012 R2 server running 7 VM’s – including SharePoint 2013, Exchange 2013 or Lync 2013 and SQL server
Off course you can adjust the costing by changing the Compute Instance
