I filled out the survey on that one (mine is solely from a buyer's viewpoint)....and I thought it was hilarious.

Unless eBay is delivering stuff themselves, there is no way to 'guarantee delivery ' as long a Aust Post is ultimately in charge.

Even in my area where AP is pretty good, as long as a parcel goes through Sunshine West, Chullora and all the other Black Holes of Parcel Death, delivery guarantees are hit and miss at best.