[johnwheeler]

What the hell good is a budget alert when you’ve launched 2000 high memory instances because your programmer screwed up?

[andrewguenther]

Because those alerts are hookable and could shut down the instance.

[matkoniecz]

With delay measured in hours.

[whoknew1122]

There's other things you can use for this, such as CloudWatch Alarms.

And where are your code reviews?