Does anyone know how long it should take for something to be posted from the U.S to Australia through e-bay?

Do you mean a payment, like through pay pal or do you mean a package sent?? Maybe I am not understanding but I use Ebay a lot so let me know if I am wrong.. If you made a payment via paypal through a instant trasfer it can take 3-5 days to post but can sometimes take 7 days. If you made an e-check it takes about the same but if you made a credit card payment it goes through instantly. If you are referring to something else please let me know and I will try to help you!