It's official: Spider-Man beats Batman. Well, when it comes to auction, that is.

A copy of Amazing Fantasy #15, the first appearance of Marvel Comics' web-crawling super-hero from 1963, has sold for $1.1 million in auction, beating Detective Comics #27, Batman's first appearance from 1939, to become the second most expensive comic ever sold (Suitably, Superman's first appearance in 1938's Action Comics #1 remains in first place; a copy sold last year for $1.5 million).