I don't use 25 gallons of whiteout each week either.
Not a very good anology and does not help your argument.
It's not how much you use, it's how much you pay per set quantity.
One item that shoulda been added...Espresso!!! Gawd, how much per gallon do we pay for espresso (or coffee) every week?? Well, lessee...it's $2.30 for a 16 oz. mocha here, so that's $9.20 a gallon!