There exists a hypothesis that proximity and common language/colonial ties are more important for differentiated products than for homogeneous products in forming price information and matching international buyers and sellers.The gravitymodel analysis, however, is not able to show strong evidence to support this hypothesis. In this paper, the author presents the result that machinery, transport equipment and miscellaneous manufactured articles,which are classified into differentiated products, have lost price information effect, which causes the hypothesis lack of empirical support.The degree of price information effect on trade of commodities depends not on their differentiation, but on their industrial origin.