Honestly, your ingredients are going to far surpass any brewing method. I've brewed cheap coffee in my Chemex that didn't taste very good and quality coffee in a hotel in-room Coffee machine that tasted amazing.
Good Beans + Good Water gets you like 70% of the way to good coffee.
When I used to work fast food, my manager told me that the most expensive component of a soft drink is the ice. Syrup & (filtered) water are pennies, but ice requires electricity to maintain and it's a little more expensive than you'd think.