- Chinnaswamy, chairman of the Builders’ Association of India, Coimbatore chapter, along with representatives of six associations related to the construction sector, told presspersons here on Saturday that the price of one bag of cement was ?270 a month ago and the retail prices had touched ?410 a bag. This had impacted construction costs and stalled on-going projects, even smaller, independent house constructions. Portland cement used in readymix concrete was not available in the retail market.