The developer decides to upgrade from free to paid plan of $500.
Jan 14The billing caluclation is pro-rated in the invoice eg: (17/30*500) = 283.33
The variable costs are also calculated if pricing rules are defined on the method/metrics
Jan 31On 1st of every month. 3scale system generates invoice and keeps in finalized state for provider to review
Feb 1After three days, the invoices are issued via email to the developers
Feb 4After two days, the developers credit card is charged for the issued invoice
Feb 6