Key pendant help?

I need help finding a key necklace for a friends birthday, something sort of similar to this a href="http://www.sears.com/shc/s/p_10153_12605_04493958000P?vName=Jewelry&cName=Pendants+%26+Necklaces&keyword=key" rel="nofollow"http://www.sears.com/shc/s/p_10153_12605…/a but in silver, and with out the diamonds i would like to keep it under $30.00 any ideas on stores to check?!?