In Windows Azure stopping an IaaS virtual machine stops the billing, there is no need to delete the stopped instance. When you stop a PaaS cloud service, following happens:
Based on billing:
This is really true. On 26th and 27th I had a cloud service running on Azure, but I stopped it. On 28th and 29th there is billing for a service that has been stopped, and for which I got the warning about. I don't know why on 30th there is one core missing from the billing. Discount, perhaps?
My bottom line is: Why? What possible idea could be, that your PaaS cloud service needs to be deleted in order to stop billing? Come on Microsoft! Equal rules for both cloud services!