400 grams of high calcium milk powder for tens of yuan is real. According to relevant public information, Mengniu high-calcium milk powder on the market costs 2,208 yuan for 400 grams, and Nestlé skim high-calcium milk powder costs 35.8 yuan for 400g bags. These are high-calcium milk powders from big brands, and the prices are tens of yuan. High calcium milk powder supplements calcium and can be consumed by the elderly and children.