Yes, 30 days trial license is available on the link: http://www.cloudlinux.com/docs/get_trial_key.php
To cancel a license:
Log in to cln.cloudlinux.com
Choose Management -> Cancel paid license(s) -> OK -> Put number of licenses you wish to cancel.
Becoming a CloudLinux partner is easy, see details on our partner program on the link: http://www.cloudlinux.com/partners/
We have partner program for datacenters & dedicated server/VPS providers. You can find more information on the link:http://www.cloudlinux.com/partners/overview.php
You can buy it on the link: https://cln.cloudlinux.com/clweb/buy.html
CloudLinux can be purchased at $14/month/server.You can buy it here: https://cln.cloudlinux.com/clweb/buy.html