Annoying, but yes ebay are showing an expected delivery date by the 27th december, probably because with the 2nd class post, they don't want to promise delivery by Christmas, at this point. Everything is taking longer to deliver right now. I am waiting for and also sent out several parcels 48hr tracked, but had little success with delivery. Some are now ten days late. They seem to be overwhelmed and i think with the introduction of simple delivery (though not applicable to you), ebay are seeing in real time that orders are taking longer.