Substitute for milk

I decided to go vegan. However I couldn't find any substitutes for milk that are cheaper than milk . Do you have suggestions?
First you must find a substitute that's fit your taste. In your case, there must be place in your country where they produce vegetable milks. But you have to choose an biological vegetal milk [cereals made without bad fertilizers chemicals or dead animals], in order to help producing safe cereales for your health. If you have money issues to buy those, you will have still to buy quality drink but drink less quantity of it.