Bill, I don't have one, but just got a set from Wag Aero for about $125. (no, they won't match - just throwing that out in case someone wanted to find a set)
The Rosens are top-of-the-line, but somewhere near $400 or so....ouch. Mark Buchner told me about the less expensive set.
Bill, I would start checking aircraft salvage yards. There are probably enough "totalled" airplanes with things like that still in them....MM