Nazi iron cross do you have any idea what it is worth?

There are several types of Iron Crosses. There are some from WW1 that are worth $40 - $70. The WW2 Iron Crosses are worth more. Then there are various classes. Iron Cross 1st Class has a pin on the back to wear on the uniform. It is worth more than the 2nd Class which hung from a ribbon. The 1st Class from WW2 is probably worth more than $100. If they are hallmarked they are worth even more.