[AngusH]

You need separate costed quotas for each type of activity with a combined total at the bottom.

You could also have a setting in the admin panel as to what the system should do:

[ ] I want to keep going beyond my quotas (but email me)

[ ] Please shutdown my site

[asciimike]

If the answer is "you have a dollar limit set of GCS GETs, GCS PUTs, etc." I guess I could see this working, but hot damn that'll be a horrific interface.

The other issue is that many large customers pay different prices, so billing and quota aren't really tied to each other, and it wouldn't be easy to reconcile this.

As for the button... having been on the product side of building this button, there is no right answer: people will say they never got the email (or it went to the wrong inbox, or their dog ate their phone...) or that they never checked the box to "shut down the site" ("I didn't think it would do X that made my app not work").

[AngusH]

I'd probably want it grouped by category with a drill down interface for the specifics.

Probably arranged so you can type in a figure at the bottom for monthly expenditure and it would balance out the requirements based on typical use cases.

So enter $50 in the monthly cap figure and it allocates, say, $20 to compute, $20 to transfer operations and API calls, $10 to storage

which you could then fiddle with of course.

I can't offer much on the second point other than to say that unexpected bills annoy me much more than services that stop working.

I've also never worked anywhere with unlimited budgets. (alas)

I can see that there are probably cases where uptime is more important so they would be more annoyed the other way around.