Amid high inflation woes, Indian housewives would have to shell out a few extra bucks for their daily milk requirement. Gujarat Milk Cooperative Federation Ltd (GCMMF), which owns Amul brand, is set to increase milk prices in the range of five-seven per cent for different category of milk anytime this month, informed top GCMMF official on Monday. The federation may invest Rs 3,000 crore towards capacity enhancement and new product development, a senior official informed.