Possibly customs, I have never had this problem before and I have sent a few books overseas. Apart from refused written all over it and the stamp of a finger saying RTS there is nothing else on it. I was just taken aback by the blutness of her email, short and not so sweet lol

 

I now only post overseas to NZ and the Asia area as I am not impressed in paying high fees on the high postage on large items with ebay then again with paypal. A lot of my heavier books are around $10.00 so with the fees you're not left with much.