Tailcoat at Goodwill?

I know it's too far from Halloween and I might change my mind along the way but I was thinking about being Zatanna from Justice League for halloween and so far have gotten, or at least listed, where I can go to get the other parts of the costume I need, however the only thing missing is a tail coat. I've tried looking online (ebay, etc.) but they were too expensive and I highly doubt Wal*Mart and such will have what I need. Do you think Good Will is a good place to look for such an item? THANKS!