These biscuits are very very cheap. Good thing about it is that, still eaten by very poor people. Since being very sweet it an instant energy source. When one donates blood, he is given this biscuits along with tea/coffee. Though currently there are many alternatives and better biscuits available they are pricey.
I am not that big a fan of these biscuits now, but there was a time I was maybe since they were the only good ones available then.