If you choose to upgrade to a Trifecta Premium subscription your iTunes account will be charged after confirmation of purchase. The subscription options are a monthly subscription at a cost of 9.99 USD per month or a yearly subscription at a cost of 69.99 USD per year or 5.83 USD per month. Your new subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Your subscription price will never be increased when renewing.
Subscriptions may be managed and auto-renewal may be turned off by going to your Account Settings after purchase. Once you purchase a current billing period cannot be cancelled. Any unused portion of a free trial period, if offered, will be forfeited when you purchase the Premium subscription.