I suspect the fact there is potentially a wider addressable market via the black market probably has more to do with the price setting mechanism than an immorality premium.

Although, maybe there is something to the immorality/illegality tax in this case. The author is in high school (how cool is that!?) and the article would probably hit differently to perspective employers if they were detailing the exploit they had sold to NK (which is to say nothing of how NK would feel about the sunlight).