Milk Powder up again

Milk powder up again. I heard the price will be up 8-11%! Oh My, my pay not even up to 10% ler. I always think to change milk powder, to switch to a cheaper brand, but I have lot of concern too. I am worry the girls' stomach might not suitable for other brand. but many told me that since they already nearly 3 and 5, should be no problem. But I still put this on hold. after all, i still afford to pay for the up price, but pay unwillingly lar.