I went to the istocknow website just now and seen a matte black att 128 plus was available in an Apple Store a little over an hour away...my store didn't have any....upon reserving this phone, the only method for payment was IUP. Now, it never asked me to pay or sign up through the IUP, but it never gave me the option for buying it straight out or the att next. My question is, if it's reserved with the IUP as payment, can I choose a different form of payment upon arriving at the store?