Ah so you're not hosting SD yourself in the cloud, you're just using Dreamstudio's API? Excellent idea, much simpler setup, and $0.02 actually seems pretty cheap.

Can you talk more about the stack?

Lol I wish I knew how to self host, would probably save me some bucks.

Stack: NuxtJS/Express(Heroku+Google Cloud Workers)/MongoDB/TailwindCSS

There are many tutorials on how to set this up on AWS but I'm not sure that would be cheaper than what you have now.