==========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
Item: Philips AVENT 3-in-1 Electric Steam Sterilizer
Link: http://www.amazon.com/Philips-AVENT-Electric-Steam-Sterilizer/dp/B0057ECYS0/ref=pd_bxgy_ba_img_y
Qty: 1
Price: 49
Contact: 98675297
Link: http://www.amazon.com/Philips-AVENT-Electric-Steam-Sterilizer/dp/B0057ECYS0/ref=pd_bxgy_ba_img_y
Qty: 1
Price: 49
Contact: 98675297
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