How does the billing cycle work?

If I pay for unlimited developers on the team for $10/month on the 21st but then decide to pay for unlimited CBL scripts on the 27th at $20/month, will I always be billed $10 on every 21st of the month and $20 every 27th of the month?


Payment will be always charged on the beginning of the month.
If you add card on the 21st and buy something full price will be charged. But if you added card last month and and buy something on the 21st only 1/3 of full price will be charged.



So if I buy today but with a new card, I wouldn’t be billed until, September 1?