You will not be charged for the selected Fi GPS/LTE Subscription plan at checkout. Instead, you will begin a 30 day trial and then be charged 30 days after activating your pup's Fi Collar, to the original form of payment used.
Please note, if you do not claim your trial within 45 days by activating the Fi Collar, your subscription will begin and be billed.
Subscriptions auto-renew by default at the end of each cycle. See: How Do I Check My Current Fi GPS/LTE Subscription Plan?
To make changes, see: How Do I Update or Cancel My Fi GPS/LTE Subscription?