You can pull out at anytime during the 3 months free period, just let us know by email or phone.
The website cost is based on the number of teams you need it to support. The less teams you have, the less resources the website will consume, and the less it will cost per month.
Please note that you will be able to increase or decrease the number of teams you require for your website at any time (once the website is live and you have logged in to the administration facility).