> What good is a $2/mo cloud instance if it's down multiple times a month?
The perverse irony is that the most common reason cited by cloud providers for not letting people set a hard cap on charges is an insistence that surely the last thing you want in the world is for your service to be taken offline, even if it does means avoiding a $1k–$100k bill at the end of the month.
Just get a $5/mo VPS instead if you're really concerned about a few dollars a month.