When I list a comic online the highest grade I assign it is 9.4 NM. Even if it looks utterly flawless I don’t go higher than 9.4 in my own personal grading. This is to give me wiggle room if there is a little flaw I missed. I say 9.4 and, “No apparent damage.” It’s generally served me well.
Sounds like accuracy, precision and consistency all wrapped up in one, to me!
What a racket those guys created down there in Florida - feeding off the OCD of comic collectors, creating a marketing false god, and building a giant pyramid scheme that is now embedded into the very fabric of the hobby. I give em credit. I actually do. Hook, Line, Sinker