“… The Commission has, in some previous cases, recognising the autonomy of the procurer, stated that the procurer is the best judge of what and how it wants. At the cost of repetition, the Commission notes that every consumer/ procurer must have the freedom to exercise its choice freely in the procurement of goods/services and such a choice is sacrosanct in a market economy. While exercising their choice, OPs are free to stipulate standards for procurement, and the same cannot be held to be out-rightly anti-competitive and will depend, inter alia, on factors such as the nature of the procurement, the size of procurer, the goods/ services sought to be procured by it, and whether such buying will result in foreclosure for other sellers operating in the market who are competing to sell and are substantially dependent on such buying process. Further, the autonomy to specify the requirements of procurement is inherent in the procurers. When the procurer is a dominant buyer in its sphere of economic activity and its unilateral conduct in the buying process can tend to distort competition on the supply side of such market, then there is reason to be circumspect …”