Sometimes stores will put it into the price. so if a store says something is 10 dollars exactly and it says tax included that means its really only 9.25 or something close to that but they just caluclated that tax in to make it come out even
Taxes extra and then if you want a meal you would need the drink and the chips so it comes out to something like $7.45 in my State. Also if you want avocado/guacamole in your sub it cost extra by the scoop.
Taxes are extra.