Earlier quoted context omitted.
A standard sized Azure App Service runs about a $75 a month. That will let you host about as many ASP.NET sites on it as you want - and there's no VM that you have to manage. Scaling up or out is pretty painless if you need to A SQL database on Azure runs about $5-$15 a month, depending on how you configure it. Once you throw in SSL certs and DNS management, you're probably looking at about $100 a month.
For SQL database the lowest I could find right now was costing around $600. Can you please share a link for the $5-15 price range? https://azure.microsoft.com/en-us/pricing/details/sql-databa...
Basic will do quite a lot; I use one to load test our application and haven't hit limits.