How much would it cost for these incredients?

2 Cups Flour, 2 Cups Sugar,� Cup Hershey's Cocoa,2 Teaspoons Baking Soda,2 Eggs (I use large eggs),1 Teaspoon Salt,1 Cup ermilk Remember that you can freeze ermilk, 1 Cup Mazola Oil, 1 � Teaspoons Vanilla Extract, 1 Cup Boiling Water