So I want to buy a new iMac, and right now I'm on the page where is asks for the credit card type with the number and all that. But just on top of that, it shows the subtotal, then the shipping and then estimated tax. But at the tax part, it shows 0$. Is this normal? I mean I doubt I wouldn't pay tax...although it would be great After I enter my credit card info, will it show the total with the tax added? Or should it already be showing?