I wish to publish a relatively simple app for a reasonable price and I'm sadly skipping Azure from my consideration. I'm seeing VMs similar to A1 cost about $12-15 with many hosting companies. And for $20-25 I can get your level A2 which costs $115.
I realize you may not be in a position to influence pricing. I just would like to point out that the pricing of Azure VMs is not simply uncompetitive, but plainly prohibitive. I hope Microsoft does something about it.
Saying it as a veteran Microsoft developer since the 90s.
A very nice thing that NServiceBus does on Azure is giving the opportunity to have multiple endpoints hosted in the same Cloud Service [1]. Taking this mindset, for small applications, you can build it so when needed (and presumably when money is also less of a thing since you need more), you can scale out easily, but when just starting up you can do it super cheap. This depends a lot on your application though, but for example the Topshelf framework [2] can help a lot.
I'm not affiliated with either Microsoft or NServiceBus, but I am an avid user of both and really love the ecosystem, including the pricing ;)
[1] http://docs.particular.net/nservicebus/azure/shared-hosting-...