I've heard a lot of people talk poorly of high grade OJ's, saying things like technical grade doesn't matter. Or that "I wouldn't trade my card for your high grade _____", etc, type of rants. It's just an anti-high grade bias that I've noticed over the years with OJ's, that's why prices are so low.
You can look at recent auction results and see that my point remains that N172 SGC 84's with outstanding images went for under $1000 last fall. That's very low considering the population rarity and quality of the cards. Just my viewpoint, coming from whatever planet you may think I'm on.