What is a business customer?

A business customer is one who pays Amazon by “invoice” instead of just paying by credit card at the point of order. This may mean that funds for this order are not released until the customer has paid Amazon. Lots of information about in seller support, all UK sellers are signed up for it (whether we like it or not). Customer has up to about 45 days to pay (once paid, it will become available in your payment balance). If not paid by then Amazon will just pay you anyway.

Hope this helps.