That’s a mighty strange graph. More than one Y value per X. That makes it a relation, not a function. That might knock the value down a bit.

No cover? That doesn’t mean as much as it used to.

I do like seeing the old books, but this isn’t really a buying and selling site.

Oh dear no, I did not mean to sell it. In fact, I just bought and wasn't sure if it was worth the price, 65 dollars? I hope to sell in the far future for a whole lot bunch of money, it's still 50 issues after Batman's first appearance, that must mean something.