The subscription plans give you access to a very high discount. The bonus can even exceed 100% in specific cases - yearly subscriptions for instance. No daily limits apply so you can download a month's quota at any time throughout a month's period. You cannot have two subscriptions running simultaneously on the same account. Subscriptions are set to renew automatically. Unused downloads are transferred for as long as the subscription is active. If you choose not to renew automatically, your subscription will be time limited and will end at their specified date (usually after 30 days). The end time is not related to the calendar month but to the date at which you made the subscription purchase.