Guys, I was making reference to the checklist that I am working from. I wish I could recall where I snagged it from.
There are a few others that could be on the list, Bull Durham, both Merkles, all of the Hal Chase cards etc.
The cards all have a story as to WHY they carry a premium added. That is not in question.
I am imagining some poor Newbie looking at the list and seeing them as "common".
Personally, I think a common price multiplier could be implemented. Pick a price. For the sake of this statement, let's say that a "true" common can be had for $25. A Fred Merkle might be considered a 2X common, a Black Sox Chick perhaps a 2.5X or even a 3X common. It would get insane with the Doyle or the Magie, though