Consider the serving size. If it is too big or too small, you will not be able to get enough out of each container. And if it has an unusually high price-per-ounce ratio, it might not be worth spending the money on if you start. Secondly, look at how many servings are in each container. If it is less than 20 servings per container, it does not have enough protein powder in each serving. Conversely, if more than 30 servings per container, there is too much extra stuff like fillers and fewer actual nutrients!