How much you'll pay for a book, based on how often it sells. Read top to bottom — the first rule that matches a book is the one used. Changes apply to your very next scan.
Which Amazon channels you actually sell through. Everything below is applied
to the ones you pick. Turn a channel off and it leaves the decision entirely — not just hidden,
so a book can never be routed somewhere you can't fulfil it.
Your costs
What it costs you to sell a book. These come off every quote, so profit means profit after all of it — get them roughly right and the rest of the page can be trusted.