I'll send both one after the other- without making you wait :) It's only for my customs agency- one of the payments will be coherent with the declared price. The scond payment will be just the difference between the real price $480 and the declared price. We will probably declare $90, so one invoice will be about $140 ($90+ $50 for shipping- makes sense :) and another one will be $480 - $140 = $340.