An issue of the comic containing Superman's debut appearance has sold for $3.2 million at auction, taking the record for the most expensive comic sold to date by over $1 million. The comic, Action Comics #1, received a 9 out of 10 quality rating from the Certified Guaranty Company, and it's believed to be one of potentially just 50 other unrestored copies still in existence, with very few of such high quality. The issue was first sold for 10 cents in 1938.
If this story sounds familiar, that's because this is far from the first time that a copy of Action Comics #1 has taken the title of most expensive comic. The previous record holder was actually another copy of this same issue, having sold for $2.16 million back in 2011 (that particular copy is believed to have a storied history, supposedly having been stolen from Nicolas Cage, serendipitously recovered and returned to him over a decade later, and later sold to another party.) That copy is said to have had a 9 CGC rating too, however it apparently had off-white pages, unlike the copy sold today. Back in 2010, another copy of Action Comics #1 took the record after selling for $1 million.