MorrisTheCat:chiefie: I remember that YooBee said they're service agent for Apple warranty, so why not contact YooBee with your Apple Service Reference number and check with them to see what can it be done? Simple as... just call YooBee up.
Already have done so (by phone) to their central 0800 number which is the only one they have. They cannot help me and have advised that 1.) they do not have any 16GB WiFi units as this case is databased as an exchange situation with my Apple Service Reference 2.) they suggest it better i deal with my original retailer.
They would need to get one in for you. I havn't found apples aftersales support in NZ to be very good. In my case apples support told me that they had arranged for me to take the defective item (remote earbuds) into a magnum mac service centre and they would swap it outright. (I did buy them from the magnum mac store) However when I took it in, they told me that that apple support was incorrect, and they would need to send it away, and I would need to make a special trip back to collect the new ones, as they didn't have stock, despite being told differently by apples own support. Therefore I would get the retailer to sort it, as their are obliged to.