NEW YORK — If you are a serious comic book collector, your Holy Grail is the issue that features the first appearance of a character. People pay big bucks for issues where a beloved superhero or villain makes their debut. The gold standard has been issues such as Action Comics #1, which saw the debut of Superman; Detective Comics #27, which introduced Batman; and Amazing Fantasy #15, in which the comics-reading world met Spiderman. A host of less heavy-hitting characters are prompting collectors to pay robust prices for their debut issues, too. In June 2021, Heritage Auctions sold a copy of Marvel Spotlight #5, which contains the first appearance of Ghost Rider, for $264,000, making it the most expensive comic from the 1970s.