I've got a Google Apps for Business account with 3 domains registered to it.
The account was setup when they were still issuing free accounts with 10 users and I have since used all my 10 user allocations.
I now want to add an 11th user / email address to the account. To do so will I just have to pay for 1 user (e.g., 10 free + 1 paid) or will I have to start paying for all 11?
(Just in case someone asks I need the 11th user to have an email address on one of my domains, so I can't just create a free Google Drive account as they need to use email also.)