I sell on EBay in the USA. I only charge the exact weight for how much it cost to be delivered for International  mail from the USA to whatever Country it is going to. I know that it takes about 10 -14 days, including weekend to get to Australia. It can take 1-3 days on our end for customs, then the package is off. It is much cheaper to go International mail, but it does not give you a door to door tracking number, although EBay is working on it.   What I would like to...