16 things that are probably hiding in your closet that are now worth a ton

Comic books

The market for comic books remains strong, bolstered by the popularity of movie adaptions of superhero stories. The most valuable comics are those from the “Golden Age” of American comics, which spans from the late 1930s to 1950. For instance, the New York Daily News reported that the 1939 issue of D.C.’s “Detective Comics” that introduces Batman is now worth a whopping $1.38 million.

Prices, however, can vary greatly. Comics Price Guide can help you figure out what your editions are worth.