To try out a service for free, you can go to Sidebar > Services > Free Trial. A package/AddOn can be tried only once for free, post which you have to go for paid subscriptions. The default quantity/count for all packages under free trial is always 1. To increase package quantity create a support request. The duration of free trial varies from package to package. To check latest offers checkout Free Trial offers
The orders are provisioned instantly and notification send via mail and in notification bar.
Buy / Upgrade / Renew
To buy a service, go to Sidebar > Services > Buy / Upgrade / Renew Packages.
To check list of sites and corresponding subscriptions details, go to Sidebar > Services > Subscription summary