[书NN] 小牛顿科学馆12元，有配送费，不支持货到付款

http://www.amazon.cn/%E5%B0%8F%E7%89%9B%E9%A1%BF%E7%A7%91%E5%AD%A6%E9%A6%86-%E5%8F%B0%E6%B9%BE%E7%89%9B%E9%A1%BF%E5%87%BA%E7%89%88%E5%85%AC%E5%8F%B8/dp/B003XXB2HQ/ref=sr_1_25?s=books&ie=UTF8&qid=1325642737&sr=1-25

http://www.amazon.cn/%E5%B0%8F%E7%89%9B%E9%A1%BF%E7%A7%91%E5%AD%A6%E9%A6%86-%E5%8F%B0%E6%B9%BE%E7%89%9B%E9%A1%BF%E5%87%BA%E7%89%88%E5%85%AC%E5%8F%B8/dp/B003XXB2H6/ref=sr_1_12?s=books&ie=UTF8&qid=1325642489&sr=1-12


大家参考下，是否合算，能不能有办法免运费？