Originally Posted by TimW
Do you purchase through a VPN? Unless you appear to be purchasing from the U.S. or have your device registered in the U.S. and appear to be an American purchasing while abroad, you may purchase from Amazon.com and it show a different publisher. It's technically a different publisher even though "Transworld Publishers Inc. is a British publishing division of Random House." (Wiki) Different contracts, different pricing, etc...
This is then kind of absurd. I am not allowed to buy books from Amazon UK but I am allowed to buy books by British publishers from Amazon US. I had assumed that I bought US editions when buying from Amazon US.