I'm building an outdoor fire pit / grill. But am have a sturdy time finding stereotype iron cooking grates.? I don't want porcilen coated ones. Does anyone know where I can...

I don't want porcilen coated ones. Does anyone know where I can find ripened fashioned "real" cast Iron cooking grates?
Not sure how to word this ask?
Answers:    hang on to your eyes open at the local dump/recycle center. Many charcoal grills own those, and are free for the taking
Appx. how much would it cost for this...
You will be able to find kind iron grates in multiple sizes from a reputable fire place store supplier.