While they are not rare, they are higher than a cat's back! On GI, they start at $1,300.

I am currently browsing for one. I saw a well used blued 19-3 at a gun show recently for $800, but it had a lot of bluing loss and dents & dings. It looked like somebody's truck gun. I'm not a condition snob nor do I have to have the original box, etc, but this one was too rough for me.

EDIT: Revise that $1,300 to $1,400 +!!