Thanks Matteblack (whoever you may be) - my name's Oliver and I got alerted to this mention of GorillaStack.

Without wishing to be too promotional, you can set a trigger to shut off EC2 when a cost threshold is reached. You can currently automate shut off of RDS but not yet from a cost threshold (that will be available shortly).

TLDR: we can do a lot of what you ask but not all of it.

Feel free to reach out if you'd like more info.