Informant’s members, 7 were importing coal from Krishnapatnam port as well as from CICTPL, though 6 out of 9 stated that their first preference is CICTPL; the remaining 3 respondents which, as per records, were located closer to Kamarajar Port as compared to Krishnapatnam, stated Krishnapatnam port as their first preference. Out of the 5 nonaggrieved members of the Informant, only 1 has stated CICTPL as its first preference, while the remaining 4 categorically stated Krishnapatnam port as their first preference for import of coal. As regards the respondents who were not the members of the Informant, 6 out of 7 stated that they were using Krishnapatnam port and Kamarajar port simultaneously, and only 1 of those 6 stated CICTPL as its first preference. 4 out of 7 of such non-members stated that Krishnapatnam port was their first choice. Further, out of the 30 respondents, the Commission observes that 9 were traders. As per the DG, 7 out of these 9 traders have given Kamarajar port as their first preference. CICTPL, however, has objected to this statement mentioned in the supplementary investigation report by stating that the actual questionnaire circulated by the DG had not specifically sought such information regarding their preference from the traders. The Commission, having verified the records, observes that while the questionnaire circulated to fixed plant owners specifically asked the respondents to fill-in information regarding their first preference, the questionnaire meant for traders neither asked for their port preference, nor their buyers’ location. The DG has reached the finding that 7 out of 9 importers preferred CICTPL over Krishnapatnam Port, based on the actual imports being done at Kamarajar Port. However, as highlighted by CICTPL, the possibility of these traders having a preference different from the port of actual import cannot be ruled out, especially given the fact that some of the fixed plant owners have given their port preferences different from the port that they actually used for imports. Based on totality of facts and data on record, the Commission finds it difficult to draw any meaningful conclusions based on a qualitative parameter such as ‘preference’ for a port, more so when such stated preference is not supported by actual usage of a port for imports by the users. To gauge the competitive constraints faced by any player (port/terminal in the present case) in the relevant market, it is necessary to consider all products/services which are perceived to be substitutable by the consumer. The existence of such substitutes keeps a check on the independent behaviour/practices being adopted by the market players. The fact that 15 out