Im looking at trading in an iPhone for a gift card at the apple store before the new iPhones come out and if I did it would I also be able to ask for extra money to be loaded onto the same gift card they give me all during the same transaction? For an iPhone 7, Apple Store is quoting $200 and I would load $250 of my own money at the same time. Would they allow for the entire $450 balance to be on the one card they give me or would I be forced to have two separate apple gift cards one for $200 and the other for $250?