Comic books aren’t just for reading anymore. Over the years, they’ve become the basis for some of the biggest blockbuster hits. According to Box Office Mojo, Marvel’s the Avengers is the highest grossing comic turned movie with a lifetime gross of over $623 million. On April 27th, Marvel hopes to hit the jackpot again with “Avengers: Infinity War“.

Aside from bringing in money at the box office, comics can make collectors filthy rich. In August 2014, a copy of Action Comics No. 1 was sold on eBay for $3.2 million. In the last year, its worth has skyrocketed. Popular comic appraiser Nostomania now values the same issue at $6.7 million. If you collect comics in your spare time, check your stash to make sure you aren’t letting one of these hot ticket items pass you by.

 

Action Comics No. 1

NM value (CGC certified): $6,770,000

Release Date: June 1938

Original Price: 10 cents

Appeal: Introduced the world to Superman and is considered the beginning of the superhero genre

 

Detective Comics No. 27

NM value (CGC certified): $3,680,000

Release Date: May 1939

Original Price: 10 cents

Appeal: First appearance of Batman

 

Superman No. 1

NM value (CGC certified): $2,350,000

Release Date: June 1939

Original Price: 10 cents

Appeal: First comic devoted to a single character

 

Batman No. 1

NM value (CGC certified): $1,430,000

Release Date: Spring 1940

Original Price: 10 cents

Appeal: In Batman’s first solo issue we met The Joker and Catwoman (then known as The Cat).

 

Detective Comics No. 1

NM value (CGC certified): $1,250,000

Release Date: March 1937

Original Price: 10 cents

Appeal: Featured stories from the detective genre

 

All-American Comics No. 16

NM value (CGC certified): $1,170,000

Release Date: July 1940

Original Price: 10 cents

Appeal: Green Lantern was introduced

 

Pep Comics 22

NM value (CGC certified): $1,080,000

Release Date: December 1941

Original Price: 10 cents

Appeal: First appearance of Archie, Betty and Jughead.

 

Marvel Comics No. 1

NM value (CGC certified): $1,010,000

Release Date: November 1939

Original Price: 10 cents

Appeal: Android superhero the Human Torch made his debut

 

Detective Comics 31

NM value (CGC certified): $1,000,000

Release Date: September 1939

Original Price: 10 cents

Appeal: First appearance of Julie Madison, the Monk, the Bat-gyro and Batman’s Baterangs.

 

Action Comics 7

NM value (CGC certified): $942,000

Release Date:  December 1938

Original Price:  10 cents

Appeal:  Superman’s second cover appearance