Nice find.
I try to stop any time I pass a Goodwill, but I've never had much luck when it comes to coffee paraphernalia. A friend of mine has 18 Chemex brewers that he had scored at various thrift stores, none of them costing more that $5. He said that they were usually located with flower vases as most people didn't know what they were. I've never had the much luck in finding one myself.