So have a “Starter” account with spend limits then, don’t understand how an individual is supposed to learn this stack and actually sleep at night without waking up panicking something has been left running.
Many of these new AWS-provided stacks, however, seem to create stuff all over your account.
The moral of the story? Don't ever use AWS tools like the one the OP describes, ones which create a bunch of different resources for you automatically.
i use them to create a small test stack to look at it for a day or two.
then go through, delete all of the resources, put what i need into terraform etc.
has worked well for me in the past.
but yeah, i would never blindly use aws tools to magically put something into production.