[ucha]

That is why AWS has billing alerts that will send you an email or text if you reach a predefined spending threshold. I had some trouble to find at first on their website so maybe it should be more visible.

The cool thing with Amazon is that they definitely pay attention to your opinion as a consumer. A few months ago, I sent an email to Jeff Bezos to complain about the Amazon Locker interface that I found cumbersome - it used to show you all lockers including the full ones and there was no way to see which ones you can actually deliver to - and his assistant answered and let me know that my message was forwarded to the appropriate team. They changed the interface a few weeks later. Maybe the author of this post should do the same.