Here is an example of an outlier. I have a page like that. In the early 2000's, I was told, DC was planning a series to unite all the magic in the universe into a single thread. So, they commissioned a series called "Sentinals of Light" which never saw the Light of day what with the New 52 coming out instead.
The person who pencilled the series was Chris Shenk, and he had a page for sale at a convention. I bought it on condition he would ink it and he did. I learned something about the character and DC publication, I didn't know. Now, his work is not particularly expensive, but this ended up very nicely done and in my opinion a bargain.
Here is what it looks like:
The guy in the hood is Jason Blood.