The Iron Cross is what I think you're speaking about. I do believe that a variation of this was used in Imperial Germany too. If you can prove that it belonged to someone vary famous, I'm sure that the price would be much greater.
An Iron Cross from the Imperial era is selling for $895. That's almost £450. This guy is based out of Florida and deals extensively in German war medals, uniforms and memorabilia but only Imperial Germany, nothing Nazi.
However, Nazi items are in big demand. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.