Marvel is offering a sizeable discount on not 1, not 2, but 15,000 comics. In honor of San Diego Comic-Con 2014, Marvel is giving away one month of Marvel Subscription for just $0.99. For 99 cents, you get access to 15,000 comics from your mobile device (iOS or Android). In short, you aren't going to be sleeping much this month.
Marvel Unlimited usually costs $9.99 a month. To bring it down to $0.99, use "SDCC14" while purchasing a new subscription.