We've had quite a bit of discussion on this, you might be able to use the site here for reference only, you know prices/pic's.
I'm not promoting them, know nothing about them. Find a couple of different places like this and compare their prices.
At least you'll know what to expect price wise and compare to your local yards, if it's too low then ship them.
Also look down at the bottom of your thread here and there is other pertinent posts about them.
Scrap Catalytic Converter Catalog With Current Prices.
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