Complete novice here. Right now I am being told that the way products are set up, someone can order JUST gift wrapping without ordering anything else from the store to be gift wrapped. I am having a hard time believing this. I am trying to offer UPGRADES not add-ons. In particular, hand painted gold accents to my custom sugar cookies. I attached an image. I'd like the upgrade to be on this page with the cost added here if possible. I cannot possibly be the only person having this problem. If anyone knows of a plug-in of some kind that I can purchase or a clever way to do this, could you please post ideas? Maybe somewhere on the checkout page???