==========跟单区(id, item, link, qty, price, contact)， 越线直接忽略，不下单====必须给电话，可以站短，没有电话的直接忽视
并且希望注明价格浮动范围，即超过多少钱就不要了
跟单
Omron 7 Series Upper Arm Blood Pressure Monitor
http://www.amazon.com/gp/product/B004H468S8/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B004H468S8&linkCode=as2&tag=show00-20
QTY：1pc
Price:57.99超过这个价格不买
ID：kailun
Tel:90065638
http://www.amazon.com/gp/product/B004H468S8/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B004H468S8&linkCode=as2&tag=show00-20
QTY：1pc
Price:57.99超过这个价格不买
ID：kailun
Tel:90065638
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