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Ah.. Ice Age is not a very valuable set. I can't really help you on the value of German cards either, but this place will give you an idea:

https://www.cardmarket.com/en/Magic

Yeah, this is also my Impression. Nothing really valuable in it. It was the set for the masses and printed in masses. In fact: according to my understanding, it was the first or second set which was bought by all the People who tried a little and then left the game. Like me.