Expressions can also use variables. Variables have a Variant data type and the expression evaluator converts the data type of a variable from a Variant subtype to an Integration Services data type before it evaluates the expression. Variables can use only a subset of the Integration Services data types.
The total COST of each cocktail using 2oz whiskey per drink and using the higher estimate of $90 to buy all ingredients, the startup cost comes out to about $7.5/cocktail. After that first bottle of whiskey is gone, you will surely have PLENTY of the other ingredients left.
3. Determine the cost per ounce for each type of liquor you serve. You can easily calculate how much each ounce of alcohol costs by dividing the cost of each bottle by the amount of ounces it holds. For example, if your cost for a 33-ounce bottle of liquor is $30, the price per ounce is about 91 cents.