Price an extension of hosted evidence retention

Prices keeping the hosted evidence of the chosen audits (every hosted artifact of each) and artifacts for months whole months past each one's current deadline. New audits are promised the standard retention (30 days in the draft catalogue); an extension is how evidence stays hosted longer. The quantity is in the audit.retention_extension meter's unit: the selection's bytes rounded up to that unit's share of a decimal gigabyte, times the months, never below ten GB-months. amount is the fixed price of that quantity at the organisation's position this month, exact and before tax, charged on the month's invoice through the billing account. A quote can be bought until expires_at (about fifteen minutes), in the month and at the catalogue version it was made in; it moves nothing and charges nothing by itself, and nothing ever renews. Expired (deleted) evidence cannot be extended. An extension that would take the storage held under extended retention past the deployment's capacity is refused, paid or not. Needs audit.read: a quote is a price, not a purchase.