Having not owned or operated or ever worked for retail bussiness, how much of the 4 bucks you pay for a coffee is actual take home in your pocket profit, you know after tax, wages, rent ect, and can that actually be calculated accurately. And if buying cheaper milk will put more money in your pocket? The way I see it is if you make average coffeee with the cheap milk then you may loose customers, but if you make consistently good coffee you will have more customers and that will make up for the extra expense of the milk. Like I said I joined the defence force when i left school and now work for state government so i have no idea how to or what its like to work all those things out. Try a blind test and ask yourself which one you would go back and spend a second 4 bucks on.