FWIW, I think the "average person" knowing about an artist or not has no real bearing on actual value. There are hundreds of fine artists that the average person has never heard of who have works that have sold for many millions. The average person has no idea who Vermeer, Newman, Girardet, Canalleto, Mucha, and many others are. But their work is still worth vast sums of money.
It's those that are knowledgable about the art form that recognize and assess the importance and value of a given work of art. For original comic art, a few of those people are posting in this thread.
The average person isn't the one spending vast sums of money on art.