You know how your dad always tells you how upset he was when your grandma threw out all of his old baseball cards and comic books because she didn't see the value in them?

Well, it turns out he may have had a point.

A mint condition "Action Comics No. 1," which features the first ever appearance of Superman, sold for $3.2 Million on Ebay.

Amazingly, that's not even close to the most expensive thing ever sold on Ebay (a yacht that went for $168 million), though it most likely sets the record for most expensive comic book or baseball card ever sold on the site.

The bidding started on August 14th at $1 million for the comic -- thought to be one of only 50 that still exist -- and some of the proceeds will go toward the Christopher & Dana Reeve Foundation. (You can see the full story of the comic, now the most valuable of all time, in the video above.)

Still, don't get too nostalgic about your dad's old comics. This one sold for so much because it's in mint condition, and considering his were probably lying in the attic for years, your dad probably would only be able to get a few hundred thousand dollars for them.

See? Don't you feel better now?