Answer: Market estimation by analogy
Explanation: In simple words, it refers to a method used for market penetration under which the organisation tries to capture a market by using its data and experiences it has with other countries.
In the given case, Gillette is used heavily by the males of other countries whereas in India they have only a minor share. Thus, they are using their experiences and resources to provide less costly products in Indian market.
Hence the correct answer is market estimation by analogy.