Quick answer
Book Time Off is £1 per active user per month after a 30-day free trial. No card is needed to start. See your cost and subscribe under Settings, Billing.
Find it under
Open Billing
Go to to see your trial status and your monthly cost.
Subscribe when you are ready
Choose Subscribe to keep going after the 30-day trial. Your monthly cost is the number of active users times £1.
How the cost works
You pay for active users only. Archived people do not count. Adding or removing someone changes the next bill. There is no minimum and no card is needed to start the trial.