Two main options there:
on a monthly basis (price available here): payment at the beginning of the month, only by credit card allowed, cancel whenever you want.
on a yearly basis: payment at the beginning of the year, several payment methods allowed, cancel before the end of the year. The price is based on the number of people, please contact us by telling us how many people would use it, and we will get back to you with a price.
We can also bill in several currencies (EUR, USD, AUD, CAD, GBP, BRL).
Feel free to reach us at firstname.lastname@example.org for any question.