[size=12]If there's nothing the matter with it, you did extremely well for only $7.00.
The old yellow book listing for these was $90-$110. I think that the yellow book has most items listed pretty high if anything, and unless things have changed, Griswold-made muffin pan prices were a little depressed for a while. Still, I don't think it's unfair to say that you may have gotten it for one-eighth or one-tenth its common price.
(Which is why I'd want to be extra sure that there really wasn't anything wrong with it. If not, run like you stole it, 'cause you did.)[/size]