I live in MA and am planning on preordering 3 AT&T iPhones. I've heard that CA and MA sales tax on the iphone is based on the unsubsidized price and is therefore ridiculously huge. Anyone know if I'll save any money preordering from AT&T on this as opposed to Apple? I'm assuming I won't avoid it in stores, given that I'm in MA, and I know I'll take that hit on the apple store. Would prefer to order from the apple store, but if it saves close to $200, ordering from AT&T makes a lot more sense..