Can u tell me how much does an IPod Shuffle 1GB cost in Store in the U.S.?

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I got an Ipod as a gift from a friend,I don't think I need it because my mobile phone is already good enough,It can play java game,mp3 take pics and all that.So,I have decided to sell the IPod on ebay,I'm just wondering how much it worth in the U.S. and how much should I sell for?!Any suggestion?