Does everyone realize he is asking for NON Aluminum? He says: "Brass" (Copper).
As far as I can tell, the Companies suggested have only Aluminum for AD except the one I stated. There are dozens of places to buy radiators but not many offer Brass/Copper and they ain't $200.
I think he has AD. I am not 100% positive. He does not say. When I searched for him, I only searched AD.
Brokenhead: With the price of Brass/Copper, the question may not be "where is best place" but "where is any place"

Good luck, I'll keep looking. If budget/availability is tight, you may rethink to Aluminum, nothing wrong with that. But shiny brass is pretty neat.