Addons include Unlimited Data, Unlimited Incoming Calls, Unlimited Outgoing Calls, Super Roam, GoRoam plus, IDD and IDD+ Add on. The first time you purchase/re-purchase it, it will be charged immediately to your card. Subsequently, you will get monthly recurring charges from the next month onwards.
Please note that these addons will continue to be charged on a recurring basis unless terminated. Check out this article for instructions on how to unsubscribe from addons.