AMAZON网站上的书有几个价钱是什么意思?应该按哪个价钱购买?请高手指教.

AMAZON网站上的书有几个价钱是什么意思?应该按哪个价钱购买?请高手指教.
(一)比如:
List Price:$35.00
Price:$31.50 & this item ships for FREE with Super Saver Shipping.Details
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7 new from $27.14 3 used from $22.05 1 collectible from $15.00
前面几行我知道是说原价35,现价格31.5,省了3.5元,但是后面说了什么,特别是最后一行有三个价钱是什么意思?
(二,)又比如:
Available from these sellers.
10 used from $18.93
Formats Amazon Price New from Used from
Expand Collapse Hardcover
Hardcover
Available from these sellers.
Publisher:harper & row,1964
Published:1964 -- $49.90 $1.56
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Expand Collapse Paperback
Paperback
Available from these sellers.
Publisher:Harper Colophon Books
Published:1964 -- -- $0.70
Paperback,April 19,2001
Paperback
Available from these sellers.
Publisher:Weidenfeld & Nicolson History
Published:April 19,2001 -- -- $18.93
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Expand Collapse Unknown Binding
Unknown Binding
Available from these sellers.-- -- $0.80
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ExpandShow 5 more formats
ExpandShow 1 more format
CollapseShow fewer formats
我应按哪个价钱付款?
(三)再问一个问题:国内哪个网站代购这些书是最便宜的?(不算书价)运费什么费总共要付多少钱?

1.按new的价钱.除非你喜欢二手书.再说二手书的卖家是个人,不一定能运到中国.
2,看你喜欢精装还是平装,hd精装pb平装.available from these sellers就代表亚马逊官网没有货,卖家是个人.个人一般无法运到中国.
3,没有便宜的 都是原价加运费你自己买单还要多给代购一笔钱.
书每本运费5美元 基础运费4美元.就是说你买2本,光运费就13美元.