Pointing out the price is the main factor that affects information goods requirement , the reaction sensitivity with the declinable to valence demand of the information goods of different type also is different ; discussed material information goods , dilate information goods respectively , deepen model information goods and special model the demand price elasticity of information goods .

指出价格是影响信息商品需求的重要因素,不同类型的信息商品的需求量对价格变化的反应灵敏度也是不同的;分别探讨了物质型信息商品、扩张型信息商品、深化型信息商品和特殊型信息商品的需求价格弹性。