Origin of Mr. Mxyzptlk and Superboy's costume
The price of "Superboy #078 CGC 7.5" at Up Up & Away! Cincinnati (Blue Ash) is USD $250.00.
The publisher of "Superboy #078 CGC 7.5" is DC Entertainment.
"Superboy #078 CGC 7.5" falls under the category of Graded Comics.