I don't think I've ever made a 10:1 ratio before.
Would you believe that it was a SA Marvel one-shot that did it for me and that it's not even a major key issue? It's a minor key at best as it features the first appearance in comics of a popular '60s TV cartoon character along with some Marvel superhero stories. I had no idea of the points it carried until I added it to my set, but I won't post the title here as I don't want to compromise the OPs challenge to himself
Although, for anyone who is curious (not you miraclemet
), I don't have a very large slabbed collection so it wouldn't be hard to figure out which book I'm referring to if you were to thumb through my sets in the registry.
A 9.6 universal sells for about $240-$285 and is worth 2625 points.
A 9.8 universal sells for about $400-$475 and is worth 4200 points.