I have a pair of Palladium Edition 8's with Moon-Audio Silver Dragon V3 cable. I was thinking about selling them, Sound is good, fit isn't perfect. I was talking with a friend about it. He's a jeweler. He said if they have palladium cups I should recycle them. He said his jewelry store would probably give me between $1,000 and $2,000 just for the palladium, depending on how many ounces are in the cup. I looked into it. Palladium is around $700 an ounce. I wonder how many ounces are in the cup.
I think it is an interesting investment when your headphones go up in value just because of the precious metal their made out of. I am guessing you don't get the same bonus with the HD800's.