The new System Tables for billing, pricing & compute look really useful and easier to consume than getting it via the APIs.

However I can't see in the documentation:

• Does data only start being gathered when you turn them on or is there immediately a history there?
• Regardless, what is the retention period of the data in there - 30 days like table history or longer or configurable?

Does anyone know? We're on a trial account so we don't have much history to test this on - and it appears we can't raise a support ticket to ask either!