I have one (with cap) but I don't think -quite sure actually- that regular mail will get it to you before 5 January (Christmas and all). Fast delivery is possible but that would be 77 Euros, ouch!
Better try to source one locally- an Australian member perhaps?
Just out of curiosity: why do you want this hood (that fits the Contax G 45mm f/2)? The lens is extremely resistant to flare and the hood is pretty tiny anyway. Or do you want it for protection of the front element?
Good luck, you have some time left.