Upsell.com ReConvert Bundles

This seems like a great app. i just tested it and it seems to run smooth too. one thing i would love to know is:
I am setting up a 'product upsell'. when people purchase, I want to give them 10 minutes to add a special item to their cart before we package the order - this way if they take the up-sell we are not paying for shipping an additional item separately. My issue is that when we 'fulfill' the orders, an email goes to that person and they can click 'view your order'. then they get the special discount without having to pay shipping. is there a way to make re-convert only show the custom order page directly after an order is processed (and not show up for people viewing the order page from other links etc.?)