From Captain America to The Walking Dead, this week's best comic book deals include a superhero for everyone. Marvel is going particularly deal-crazy in honor of San Diego Comic Con 2014; in addition to the below deals, they are offering Black Widow #1 and Inhuman #1 for free, and a month-long subscription to Marvel Unlimited for only 99 cents. Guardians of the Galaxy #1 Digital Comic Book Store: Marvel Digital Comics Price: Free via coupon code "DNA" EXPIRED Lowest By: $2 Is It Worth It?: Can't wait for the Guardians of the Galaxy premiere? Get a jump start with this Guardians of the Galaxy (2008-2010) digital comic. Just activate coupon code "DNA" to get it for free. Sony PSN Sale Store: Sony Entertainment Network Price: $2.44 Lowest By: $11 Is It Worth It?: For PS Plus members, Sony Entertainment Network discounts a selection of downloadable PS4, PS3, PSP, and PlayStation Vita games with prices as low as $2.44. A best bet includes Batman: Arkham Origins Blackgate for PS Vita, which at $2.44 is a low by $11 — and there are plenty of other comic book-themed games, if you need a break from actually reading them. Uncanny Avengers #1 Digital Comic Book Store: Marvel Digital Comics Price: Free via coupon code "UNITY" EXPIRED Is It Worth It?: Following the events of the Avengers vs. X-Men storyline, a new cast of Avengers has formed with the likes of Captain America, the Scarlet Witch, Thor, and Wolverine. Follow their adventures with the Uncanny Avengers' first issue, which is currently free at Marvel's Digital Comic shop. DC Comics Batman Eternal #1 Kindle eBook Store: Amazon Price: Free via coupon code "BATMAN75" Lowest By: $2 Expires: August 3 Is It Worth It?: Our third free comic this week comes from Amazon as it offers downloads of DC Comics Batman Eternal #1 Kindle eBook for free via coupon code "BATMAN75." Simply click on "Enter a promotion code or gift card" (located beneath the "Buy Now with 1-Click" button) and enter the aforementioned code for your free download. The Walking Dead Comic Book Vol. 1 Store: Humble Bundle Price: Free Lowest By: $10 Expires: August 4 Is It Worth It?: Can't wait for the October Season 5 premier of The Walking Dead? Catch up on the first free chapters with Humble Bundle's latest deal. It offers issues 1 through 3 for free. Alternatively, you can pay whatever you want to get the entire first volume of The Walking Dead (issues 1-6). This option requires you pay at least 1 cent. Feeling generous? If you choose to pay the average of $10.47 or more, you'll also get The Walking Dead Vol. 2 & 3, Thief of Thieves Vol. 1, and Super Dinosaur Vol. 1.