I haunt yard and garage sales, will buy any Griswald or Wagner wear I can find, it is better than anything made on market today.... IF buying new stay from anything that says (cast right into pot or pan that says) "made in china" or that has tough pebbly looking surface... Go for the Lodge, though its not as good as it used to be...
There is some out there with no markings, and if its old and very smooth, its ok, if its not pitted or really nasty... Key to success is how smooth cooking surface is.... And how well you salvage it and season it...
Dale