Yes, one can unsubscribe to a store after 30 days of subscribing, and that too right from your Account page. This is to avoid users from continually subscribing and unsubscribing to stores and thereby getting access to more information than is incorporated in their plan. You can upgrade anytime to be able to subscribe to unrestricted stores. If you subscribed to a store by mistake and want to unsubscribe before 30 days have gone by, simply contact us.