If you're a comic book collectibles enthusiast, then you're going to love this.
You may not already be aware, but all of those vintage, mint-condition comics you have stored away could be worth thousands, and depending on the rarity, even millions.
That's right, you could be sitting on a fortune if you have collectibles such as Action Comics 1 or Detective Comics 27 -- a fortune large enough to pay off a mortgage or start a college fund for your child.
With the rise in popularity of superhero movies and television shows, comic book collectors have seen a profitable market as of late. And, comic conventions such as the Wizard World Austin Comic Convention are great platforms to get a feel for the worth of your old comics.
Currently, one of the hot comics to collect is "Harley Quinn," best known as The Joker's girlfriend in the Batman universe -- she also appears in the Suicide Squad movie set to hit theaters this August.
So, if you're looking to make some major cash take a look at our list of some of the most valuable comic books below and what they're possibly worth now, according to listings found on eBay.