Abstract: The market competitiveness of goods shows ultimately the core competency and the integrated making of an enterprise, which is judged subjectively by customers, so that it can not be decided only by producers of the goods. The concept of "customer delivered value" has covered both customer value and customer cost, which can radiate the market competitiveness of goods to a certain degree. But it can't precisely show the competitiveness of lower price small goods or higher price big goods, because it is a kind of absolute value. We put forward a new concept, index of market-energy, to precisely measure the market competitiveness of goods, which is defined as the ratio of customer value and customer cost here. And based on it, goods can be classified into three grades: superior-value-goods, equal-value-goods and inferior-value-goods. Product-grade is endued by producers to great extent, and is used mainly to determine the sale price of goods. If the product-grade is matching the customer value, there is opportunity for producers or sellers to obtain the highest price in all probability.