That tends to be an important consideration when comparing costs, especially when both have B6 in them. If you want to compare apples to apples (how much B6 you get for the money), it isn’t even a comparison. The ZMA mg for mg is easily 20x more. If you want to compare ZMA to what you could get from buying both cheaper and more readily bioavailable forms of zinc, magnesium, and B6, then you would again be surprised because it is cheaper still.