If you like reading comics on your tablet, Marvel has a good deal for you. In celebration of the Comic-Con currently held in San Diego, you will get access to its entire Marvel Unlimited catalog of 13,000 comics for a month at just US$0.99. There are of course a few conditions such as the offer not being valid on Annual or Annual Plus memberships. But if you're eligible, then it's a pretty good deal as a Marvel Unlimited membership costs $10 a month or $69 a year. So if you're keen on the deal, key in the promo code SDCC14 when purchasing a monthly subscription.
Source: Marvel Unlimited