Some of the new middlemen, like eBay Inc. in San Jose, are operating auction sites that use dynamic pricing, a model that exploits the real-time capabilities of the Web to let pricing fluctuate freely based on supply and demand.

 
  • 有些新的中间商,如(加州)圣何塞市的eBay公司经营着拍卖站点,它们使用动态定价,这是一个利用Web的实时功能,让价格随供求关系自由波动的模型。
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