A CGC Certified copy of Fantastic Four #1 with off-white to white pages sold on eBay for $7,400 after receiving 16 bids. This Marvel Silver Age key featured the first appearance and origin of the Fantastic Four and the Mole Man. The Fantastic Four was Marvel's first Superhero team.
According to the the CGC Census there are 1,087 copies with the highest certified copy being a single copy in 9.6.