I do agree with this statement, but I still think that there are a few books that would fit the bill, pun intended.
I picked up the 80s as a comparable era to today, as it was right about now that 30 years ago (1986-87) comic book speculating has become a thing. 1986-7 were the first years that I heard people talk about certain books that they bought just to speculate on. We know what those books were, most of them were independent books (because of the perceived print run) and some hot new "mature" DC titles (because of Dark Knight). Very few were investing or speculating in Marvel because they simply havent had such tremendous appreciation in value overnight like the indies and Dark Knight did. Not to say that they werent selling of course, but they just werent speculated on as much. That all changed when Spider-Man 1/X-Men 1 came out.. Actually maybe even Ghost Rider 1.
But just think about it for a moment. No one ever speculated on IH181 in the 80s like they did with other trending books. It was a key book then, kinda like... I dont know... A Star Wars 1 is today (ta-daaa, here's a 70.00 dollar book for ya). Wolverine was very popular then, but not as popular as Star Wars is today. IH181 was indeed a key back then, but not what it is now. I remember going to SDCC in 1991 and seeing IH181s for 40-50$ and spending the same amount of money on a bagged signed McFarlane Spidey #1 thinking it was a no brainer!
Thats kinda what Im looking to achieve with this thread, find a book that is already an established key now, but not being speculated on.
People mentioned Spider-gwen, and I think thats a good example. The only thing is that Spider-Gwen (as much as I love that spec) isnt an established key as IH181 was in the 80s. Maybe we need to dig deeper